Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
1, You just have dinner without waiting for me. I (can, may,should,would) worl very hard today.
2,I (ought to, would,might,can) be delighted to show you round the factory.
3,Leave early so that you (didn't, won't, shouldn't, mustn't) miss the bus.
4,Unless he runshe (will, mustn't, wouldn't,won't) catch the train.
5, (will, may, might,maybe) you be in Rome tonight.
6, Jeanette did very badly on the exam. She (must have studied,should have studied, could have studied) harder
EXERCISES: CHOOSE THE BEST MODAL TO COMPLETE EACH OF THESE SENTENCES
1. I'm not sure. I ………… come a few minutes late.
a. may b. must c. mightn't d. needn't
2. Bring your umbrella. It ……… rain later today.
a. must b. may c. might d. b & c
3. – What are you doing this weekend \? – I haven't decided yet. I ……….. go on a picnic with my family.
a. may b. may not c. must d. needn't
4. I think we ………… be on time for the meeting after all, so don't worry.
a. must b. need c. may d. shouldn't
5. – Do you think they will come today? – Well, they ………. come today. But I think they'll want to look around first.
a. must b. needn't c. might d. can't
6. You ………. wash the car. I just had it done yesterday.
a. mustn't b. needn't c. might d. can't
7. "Have you seen Jack?" – "No. but he …….. be studying in the laboratory."
a. must b. should c. needn't d. may
8. It's secret. You ……….. let anyone know about it.
a. mustn't b. needn't c. mightn't d. may not
9. "I didn't have time for breakfast this morning." "You ……….. be very hungry now"
a. might b. may c. must d. a and b
10. She ___ be ill. I have just seen her playing basket ball in the school yard.
a. needn't b. shouldn't c. mustn't d. can't
11. Hiking the trail to the peak ______ be dangerous if you are not well prepared for dramatic weather changes. You _______ research the route a little more before you attempt the ascent.
a. might / can b. may / mustn't c. can / should d. must / needn't
12. Peter has been working for 10 hours. He _______ be very tired now.
a. needn't b. must c. has to d. should
13. He is unreliable. What he says _______ be believed.
a. cannot b. must not c. may not d. might not
14. I _______ find my own way there. You _______ wait for me.
a. should / can't b. have to / must c. can / needn't d. might/mustn't
EXERCISES: CHOOSE THE BEST MODAL TO COMPLETE EACH OF THESE SENTENCES
1. I'm not sure. I ………… come a few minutes late.
a. may b. must c. mightn't d. needn't
2. Bring your umbrella. It ……… rain later today.
a. must b. may c. might d. b & c
3. – What are you doing this weekend \? – I haven't decided yet. I ……….. go on a picnic with my family.
a. may b. may not c. must d. needn't
4. I think we ………… be on time for the meeting after all, so don't worry.
a. must b. need c. may d. shouldn't
5. – Do you think they will come today? – Well, they ………. come today. But I think they'll want to look around first.
a. must b. needn't c. might d. can't
6. You ………. wash the car. I just had it done yesterday.
a. mustn't b. needn't c. might d. can't
7. "Have you seen Jack?" – "No. but he …….. be studying in the laboratory."
a. must b. should c. needn't d. may
8. It's secret. You ……….. let anyone know about it.
a. mustn't b. needn't c. mightn't d. may not
9. "I didn't have time for breakfast this morning." "You ……….. be very hungry now"
a. might b. may c. must d. a and b
10. She ___ be ill. I have just seen her playing basket ball in the school yard.
a. needn't b. shouldn't c. mustn't d. can't
11. Hiking the trail to the peak ______ be dangerous if you are not well prepared for dramatic weather changes. You _______ research the route a little more before you attempt the ascent.
a. might / can b. may / mustn't c. can / should d. must / needn't
12. Peter has been working for 10 hours. He _______ be very tired now.a. needn't b. must c. has to d. should
13. He is unreliable. What he says _______ be believed.
a. cannot b. must not c. may not d. might not
14. I _______ find my own way there. You _______ wait for me.
a. should / can't b. have to / must c. can / needn't d. might/mustn't
Cross out any improbable answer
1 I've understood / I understand biology a lot better now that we've got a new teacher
2 I went / had gone to see a Formula One race last week ,but I admit / I'm admiting that don't know much about cars
3 Do you find / Have you found it difficult to concentrate on your work with this music on ?
4 We'll do / we do our best to get the computer repaired by next week ,but we won't quarantee / we don't quarantee it5 I've just started / I just started to learn how to drive . Now I'm knowing / I know how difficult is it
6 She says that she wasn't in the kitchen when the bottle was smashed / smashed,but I refuse / I'm refusing to believe her
7 I'm certainly agreeing / I certainly agree with you that people shouldn't drink and adrive
8 I know the company made / has made a loss this year . But I won't apologize / I don't apologize for that
9 It's very difficult for us to get jobs here, so we're considering / we consider emigrating to Canada
10 Since I has won / I won the lottery , my telephone didn't stop / hasn't stopped ringing . People phone / are phoning to ask how / spend the money
11 In tonight's World Cup match , France currently beat / are currently beating Gremany 2-1 with five minute of the match to go . If the score remains / is remained the same it will be the first time Germany lost / have lost to France since 1998
12 Beckham passes / is passing to Giggs who shoots / is shooting just over the bar. Manchester United attack / are attacking much more in this half13 She goesl She's going up to this man and looksl / looking straight into his eyes. He's not wearing / He doesn't wear his glasses ,and he's not recognizing / he doesn't recognize her
Put in 'mustn't'or 'don't/doesn't have to:
1.We have a lot of work tomorrow. You....mustn't..... be late.
2.You.....mustn't..... tell anyone what I just told you. It's a secret.
3.The museum is free. You....don't have to....pay to get in.
4.Children.....mustn't.....tell lies. It's very naugthy.
5.John's a millionaire. He....doesn't have to....go to work.
6.I.....don't have to....do my Washington, because my mother does it for me.
7.We....don't have to.....rush. We've got plenty of time.
8.You.....mustn't.....smoke inside the school.
9.You can borrow my new dress but you....mustn't....get it dirty.
10.We......mustn't.......miss the train. It's the last one tonight.
11.She.....doesn't have to.....do this work today,because she can do it tomorrow.
12.I......don't have to.....clear the floor today, because I cleaned it yesterday.
13.We.....mustn't....forget to lock all the doors before we leave.
14.We....don't have to.....stay in a hotel in London, we can stay with my brother.
15.I.....mustn't....spend too much money today. I've only got a little left.
16.They.....don't have to....get up early today, because it's Sunday.
17.I.....mustn't....eat too much cake, or I'll get fat!
18.We...mustn't....be late for the exam.
19.You.....don't have to.....tidy up now. I'll do it later.
20.He....doesn't have to.....cook tonight because he's going to a restaurant.
Chúc bạn học tốt!
1. Do you have a better hat that this? ->Is this .......the best hat you have..........
2. My house is the oldest house on the street. -> no houses.......on the street is older than my house....
3. Will you please look after the house while we're away?->will you please take .......care of the house while we're away .....
4.Vietnamese students have fewer vacations than American ones ->American students........have more vacations than V students ones.........
5 How much is this dictionary? ->How much does......this dictionary cost.......
6. It isn't important for you to finish the work today. ->You don't .........have to finish the work today.........
7.Mr.Thanh couldn't enjoy the meal because of his sickness ->Beacause Minh ......was sick , Mr.Thanh couldn't .........
8. Why were you absent from class last Monday? ->Why didn't..........you go to class last Monday .................
9. It is not necessary for you to finish the work to day . ->You don't have........to finish the work today..............
10.Literature interests my brother al lot. -> (interested)....My brother is interested in literature .......
11. We didn't enjoy the trip bacause of the heavy rain. ->The heavy rain prevented......us from enjoying the trip ..............
12. The visitor spoke so quickly that I couldn't understand what he said. ->the visitor spoke too.........quickly for me to understand what he said................
13. Han is a better swimmer than Lan. -> Lan can't swim.....as good as Han..........
14. Can she take care of herself when her mother is away? ->Can she look......after of herself when her mother is away.............
15. Let't visit the museum this afternoon. -> What about our .......visit in the museum this afternoon.......
16. It'll be not necessary for you to go to the meeting next week ->You won't have......to go to the meeting next week.........
17. How long was your flight from Ha Noi to Jakarta? -> How long did...........your flight from Hanoi to Jakarta take .................
18. Minh usually works hard -> Minh is usually.........a hard -working...............
19.I'm not as good at Math as my brother. -> My brother is.........better at Math than I am..............
20.They won't be able to come on Saturday ->It will be impossible.........to come on Saturdat.........
21. To learn English is very good -> It is.........very good to learn English............
22. He is able to speak English to his teacher. ->She can.......speak to her teacher............
23. Be sure to look the door before you leave ->Don't........forget to lock the door before you leave.............
24. We have to keep our school clean, green and atteractive ->It's our duty..........to keep our school clean , green and atteractive.........
25. Lan's parents gave her a bike for her birthday. ->Lan received..........a bike from her parents on her birthday.............
26. It took Mr. Hoang half an hour to walk to work yesterday. ->Mr. Hoang spent..........half an hour walking to work yesterday..................
27. Lan is youngest of three sisters ->Lan has.........two elder sisters.............
28. The weather is too cold for us to go out ->THe weather is not.........warm enough for us to go out..........
29. We usually wrote letters when we lived in the country side ->We.........used to write letters when we lived in the ...........
30. Would you like some bananas? ->Do you..........want some bananas............
31. They are going to visit their friends next Sunday ->They........intend to go to visit their friends next Sunday..........
1. Do you have a better hat that this?
->Is this the best hat you have?
2. My house is the oldest house on the street.
-> no houses on the street is older than my house.
3. Will you please look after the house while we're away?
->will you please take care of the house while we're away?
4.Vietnamese students have fewer vacations than American ones
->American students have more vacations than Vietnamese ones .
5 How much is this dictionary?
->How much does this dictionary cost?
6. It isn't important for you to finish the work today.
->You don't have to finish the work today.
7.Mr.Thanh couldn't enjoy the meal because of his sickness
->Beacause Mr Thanh was sick, he couldn't enjoy the meal.
8. Why were you absent from class last Monday?
->Why didn't you come to class last monday?
9. It is not necessary for you to finish the work to day .
->You don't have to finish the work to day .
10.Literature interests my brother al lot.
-> My brother is intersted in Literature.
11. We didn't enjoy the trip bacause of the heavy rain.
->The heavy rain prevented us from enjoying the trip.
12. The visitor spoke so quickly that I couldn't understand what he said.
->the visitor spoke too quickly for me to understand what he said.
13. Han is a better swimmer than Lan.
-> Lan can't swim as well as Han.
14. Can she take care of herself when her mother is away?
->Can she look after herself when her mother is away?
15. Let't visit the museum this afternoon.
-> What about our visiting the museum this afternoon.
16. It'll be not necessary for you to go to the meeting next week
->You won't have to go to the meeting next week
17. How long was your flight from Ha Noi to Jakarta?
-> How long did you fly from Ha Noi to Jakarta?
18. Minh usually works hard
-> Minh is usually a hard-working worker.
19.I'm not as good at Math as my brother.
-> My brother is better at Math than me.
20.They won't be able to come on Saturday
->It will be impossible for them to come on Saturday.
21. To learn English is very good
-> It is good to learn English.
22. He is able to speak English to his teacher.
->She can speak English to his teacher.
23. Be sure to look the door before you leave
->Don't forget to look the door before you leave.
24. We have to keep our school clean, green and atteractive
->It's our duty to keep our school clean, green and atteractive .
25. Lan's parents gave her a bike for her birthday.
->Lan received a bike from her parents for her birthday.
26. It took Mr. Hoang half an hour to walk to work yesterday.
->Mr. Hoang spent half an hour walking to work yesterday.
27. Lan is youngest of three sisters
->Lan has two older sisters.
28. The weather is too cold for us to go out
->THe weather is not warm enough for us to go out.
29. We usually wrote letters when we lived in the country side
->We used to write letters when we lived in the country side.
30. Would you like some bananas?
->Do you like to eat some bananas?
31. They are going to visit their friends next Sunday ->They plan to visit their friends next Sunday
USE THE WORD GIVEN INBRACKETS A FORM A WORD THAT FITS IN THE SPACE
1 Saucepans are sold in the .......household............ goods department HOUSE
2 I'm really happy as all of my neighbors are very ..........friendly...... FRIEND
3 we must remember to eat ............................sensibly........................ SENSE
4 this lovely apartment has two bedroom and it is .........furnished..... FURNISH
5 he didn't win the championship , so he felt very ..........hopeless..... HOPE
6 we are very proud of our ..........................friendship........................... FRIEND
7 her aunt wants to know Lan's............................height.................. HIGH
8 you mustn't drive ..............carelessly..............on busy streets. CARE
9 what an ..........amazing...... actor! He the makes the movie wonderful AMAZE
2 Fill a suitable preposition
1 Fiona is getting better and better ................at............writing compositions.
2 can you help me wash ............up........these dirty glasses?
3 John's worried ...............about.............his final exam .
4 we look ..............up............ the new words in the dictionary
5 You shouldn't eat and watch tv...........at............ the same time
6 I'll come over and pick you ...................up..............at 8 o'clock .
3 rewrite
1 charles lives quite near his aunt's house
.................................Charles doesn't live so far away from his aunt's house................................................................. DOESN"T
2 If you don't study hard , you will fail the exam
....................................Unless you study hard, you'll fail the exam................................................... UNLESS
3 The tortoise was running . The hare was sleeping
.........................................While the tortoise was running, the hare was sleeping................................................ WHILE
4 can the little boy look after himself when his mother is away? ............................................Can the little boy look take care of himself when his mother is away?.......................................................... TAKE
5 It is not necessary for you to finish your assignment this evening . ................................You don't need to finish your assignment this evening................................................................. NEED
4 Complete the second sentence
1 Nam spent two hours repainting his house
it took ...............................Nam two hours to repair his house................................
2 lien doesn't like doing sport very much
lien isn't very......................keen on/ interested in/ fond of doing sport very much................
3 This painting is so beautiful
what .............................a beautiful painting!...................................
4 my sister is more hard - working than me .
I don't .............................work as hard as my sister does...................................
5 I was late for school this morning . My sister was, too
Both..................................my sister and I were late for school this morning..........................................
EXERCISE 1: Use the correct form of verbs in brackets.
1. In all the world, there (be) ____are______ only 14 mountains that (reach) ____reach______above 8,000 meters.
2. He sometimes (come) ____comes______ to see his parents.
3. When I (come) ____came______, she (leave) ___had left_______for Dalat ten minutes ago.
4. My grandfather___have__ never (fly) ______flown____ in an airplane, and he has no intention of ever doing so.
5. We __have___just (decide) ____decided______ that we (undertake) ______would undertake______ the job.
6. He told me that he (take) ___would take_______ a trip to California the following week.
7. I knew that this road (be) ___will be_______ too narrow.
8. Right now I (attend) ___attending_______ class. Yesterday at this time I (attend) _____was attending_____class.
9. Tomorrow I'm going to leave for home. When I (arrive) ____arrive______at the airport, Mary (wait) ___will be waiting_______ for me.
10. Margaret was born in 1950. By last year, she (live) ___has lived_______on this earth for 55 years
11. The traffic was very heavy. By the time I (get) _____got_____to Mary's party, everyone (arrive) ____had already arrived______
12. I will graduate in June. I (see) ____will see______ you in July. By the time I (see) _____see_____ you , I (graduate) ____will have graduated______.
13. I (visit) _____visited_____ my uncle's home regularly when I (be) ____was______ a child.
14. That book (be) _____has been_____ on the table for weeks. ______Haven't____ you (not read) ____read______ it yet ?
15. David (wash) ____is washing______ his hands. He______has____ just (repair) ___repaired_______ the TV set.
16. ______Have____ you (be) ____been______here before? Yes, I (spend) _____spent_____ my holidays here last year.
17. We ______have____ never (meet) ___met_______ him. We don't know what he (look) ________looks__ like.
18. The car (be) ___will have been______ ready for him by the time he (come) ___comes_______tomorrow.
19. On arriving at home I (find) ____found______that she_____has_____ just (leave) _____left_____a few minutes before.
20. When we (arrive) ______arrive____ in London tonight, it______will____ probably (rain) ____be raining_____.
21. It (rain) ___is raining_______ hard. We can't do anything until it (stop) ___stops_______
22. Last night we (watch) ____were watching______TV when the power (fail) ____failed______.
23. That evening we (stay) _____stayed_____up to talk about the town where he (live) ____has lived______for some years.
24. I (sit) _____sat_____down for a rest while the shoes (repair) ____were being repaired______.
25. Half way to the office Paul (turn) ____turned______round and (go) ____went______back home because he (forget) ___had forgotten_______to turn the gas off.
26. London (change) ____has changed______a lot since we first (come) _____came_____ to live here.
27. While we (talk) ____were talking ______on the phone the children (start) _____started_____fighting and (break) ___broke_______a window
28. He used to talk to us for hours about all the interesting things he (do) ______had done____ in his life.
29. You know she (stand) _____has been standing_____looking at that picture for the last twenty minutes.
30. I (spend) ____has spent______ a lot of time travelling since I (get) __got________this new job.
31. When we (be) ____were______ at school we all (study) _____studied_____Latin.
32. When I (meet) ______met____ him , he (work) ______had been working____as a waiter for a year.
33. After he (finish) _____had finished_____ breakfast he (sit) _____sat_____down to write some letters.
34. She (have) ____has______a hard life, but she's always smiling.
35. I think Jim (be) _____will be_____ out of town.
EXERCISE 1: Use the correct form of verbs in brackets.
1. In all the world, there (be) ______are____ only 14 mountains that (reach) _____reach____above 8,000 meters.
2. He sometimes (come) _____comes_____ to see his parents.
3. When I (come) ___came_______, she (leave) ____had left______for Dalat ten minutes ago.
4. My grandfather has never (fly) ____flown______ in an airplane, and he has no intention of ever doing so.
5. We have just (decide) ____decided______ that we (undertake) ______would undertake______ the job.
6. He told me that he (take) _______would take___ a trip to California the following week.
7. I knew that this road (be) ____was______ too narrow.
8. Right now I (attend) _____am attending_____ class. Yesterday at this time I (attend) ____was attending______class.
9. Tomorrow I'm going to leave for home. When I (arrive) _____arrive_____at the airport, Mary (wait) _____will be waiting_____ for me.
10. Margaret was born in 1950. By last year, she (live) ____had lived______on this earth for 55 years .
11. The traffic was very heavy. By the time I (get) ____got______to Mary's party, everyone had already (arrive) ___arrived_______
12. I will graduate in June. I (see) ____will see______ you in July. By the time I (see) ____see______ you , I (graduate) ____will have graduated______.
13. I (visit) _____visited_____ my uncle's home regularly when I (be) _______was___ a child.
14. That book (be) ____has been______ on the table for weeks. Haven't You (not read) _____read_____ it yet ?
15. David (wash) ______is washing____ his hands. He has just (repair) _____repaired_____ the TV set.
16. Have You (be) _____been_____here before? Yes, I (spend) _____spent____ my holidays here last year.
17. We have never (meet) ___met_______ him. We don't know what he (look) ____looks______ like.
18. The car (be) ______will have been____ ready for him by the time he (come) _____comes_____tomorrow.
19. On arriving at home I (find) _____found_____that she had just (leave) ______left____a few minutes before.
20. When we (arrive) ______arrive____ in London tonight, it will probably (rain) _____be raining_____.
21. It (rain) _____is raining_____ hard. We can't do anything until it (stop) ___stops_______
22. Last night we (watch) _____were watching_____TV when the power (fail) ____failed______.
23. That evening we (stay) ____stayed_____up to talk about the town where he (live) ______had lived____for some years.
24. I (sit) ____sat______down for a rest while the shoes (repair) ____were being repaired______.
25. Half way to the office Paul (turn) ____turned______round and (go) _____went_____back home because he (forget) ____had forgot______to turn the gas off.
26. London (change) ____has changed______a lot since we first (come) ______came____ to live here.
27. While we (talk) ___were talking_______on the phone the children (start) ____started______fighting and (break) _____broke_____a window
28. He used to talk to us for hours about all the interesting things he (do) _____had done_____ in his life.
29. You know she (stand) ____has been standing______looking at that picture for the last twenty minutes.
30. I (spend) ______have spent____ a lot of time travelling since I (get) _____got_____this new job.
31. When we (be) ______were____ at school we all (study) ______studied____Latin.
32. When I (meet) ______met____ him , he (work) ____had been working______as a waiter for a year.
33. After he (finish) ______had finished____ breakfast he (sit) _____sat_____down to write some letters.
34. She (have) ____has______a hard life, but she's always smiling.
35. I think Jim (be) _____has been_____ out of town.
EXERCISE 2: Choose the correct sentence among A, B, C or D which has the same meaning as the given one.
1. Eight years ago we started writing to each other.
A. We have rarely written to each other for eight years.
B. Eight years is a long time for us to write to each other.
C. We wrote to each other eight years ago.
D. We have been writing to each other for eight years.
2. The boy was so lazy that he couldn't stay up late to learn his lessons.
A. The boy was lazy enough not to stay up late to learn his lessons.
B. The boy was too lazy to stay up late to learn his lessons.
C. The boy was lazy enough but he stayed up late to learn his lessons.
D. The boy was lazy enough to stay up late to learn his lessons.
3. My father is tired of seeing any violent films.
A. My father hasn't seen a violent film.
B. My father has enjoyed all the violent films he has ever seen.
C. My father is worried about missing the next violent film.
D. My father never wants to see another violent film.
4. As soon as he waved his hand, she turned away.
A. He saw her turn away and he waved his hand.
B. No sooner had he waved his hand than she turned away.
C. She turned away because he waved his hand too early.
D. Although she turned away, he waved his hand.
5. John wishes he had remembered to send Mary a Christmas card.
A. John regrets not to send Mary a Christmas card.
B. John regrets forgetting not to send Mary a Christmas card.
C. John regrets not remembering sending Mary a Christmas card.
D. John regrets forgetting to send Mary a Christmas card.
6. My father hasn't smoked cigarettes for a month.
A. It's a month since my father last smoked cigarettes.
B. It's a month ago that my father smoked cigarettes.
C. It's a month that my father hasn't smoked cigarettes.
D. It's a cigarette that my father smoked a month ago.
7. Having finished their work, the workers expected to be paid.
A. The workers expected to be paid because they had finished their work.
B. Having their work finishing, the workers expected to be paid.
C. Having expected to be paid, the workers finished their work.
D. Having been finished their work, the workers expected to be paid.
8. Mr. Brown bought this car five years ago.
A. Mr. Brown started to buy this car for five years.
B. It has been five years when Mr. Brown has bought this car.
C. Mr. Brown has had this car for five years .
D. It is five years ago since Mr. Brown has bought this car.
9. John used to write home once a week when he was abroad.
A. John doesn't write home once a week any longer.
B. John enjoyed being written home every week when he was abroad.
C. John never forgot to write a weekly letter home when he was abroad.
D. When he was abroad he remembered to write home every week.
10. I haven't enjoyed myself so much for years.
A. It's years since I enjoyed myself so much.
B. It's years since I have enjoyed myself so much.
C. It was years since I had enjoyed myself so much.
D. It has been years since I have enjoyed myself so much.
Cái này của lớp 5 hay sao ý nhưng nhìn nó dễ lắm
1. When the fog lifts, we _______where we are. *
A. could see
B. will be able to see
C. must have seen
D. are seeing
2. The swimmer was very tired, but he________the shore before he collapsed. *
A. was able to reach
B. can reach
C. could reach
D. has reached
3. If a letter comes for me, ________you please forward it to this address. *
A. shall
B. could
C. must
D. should
4. Laura, you and the kids just have dinner without waiting for me. I ______work very hard today. *
A. can
B. may
C. should
D. would
5. Leave early so that you________miss the bus. *
A. didn't
B. won't
C. shouldn't
D. mustn't
6. Twenty years ago, David_______speak Arabic fluently. Now he's forgotten a lot. *
A. could
B. might
C. needed
D. must
7. Jessica hasn't made up her mind about where to go to school. She________attend Duke University. She just doesn't know yet. *
A. mustn't
B. may not
C. needn't
D. can't
8. This box isn't as heavy as it looks. You ________help me with it. Thanks anyway for offering to help. *
A. must
B. mustn't
C. might
D. needn't
9. Yesterday everyone in the office________leave the building for a fire drill. I am glad it wasn't a real fire. *
A. may
B. might
C. must
D. mustn't
10. You________play loud music at night. The neighbors will call the police. *
A. mustn't
B. needn't
C. might not
D. couldn't
11. You________stand up. There are a lot of seats available on the bus. *
A. couldn’t
B. mustn't
C. needn't
D. might not
12. People who use public parks_______clean up after themselves. *
A. must
B. may
C. ought
D. might
13. This library book is overdue. I________better return it today. *
A. need
B. must
C. might
D. had
14. Our company provides free advice on the use of our products. You_______pay us. *
A. must
B. have to
C. needn't
D. mustn't
15. Whatever_______come, I will always be by your side. *
A. must
B. may
C. could
D. need
16. "________you hand that book, please?" "Sure. Here it is." *
A. Could
B. Should
C. Must
D. May