16. the phone has been ring ing for a minute. Noone …………at home(must have been/ can have been/ should have been/ none of these)
17. she’s fainted. Throw some water on her face and she ………. Come round.(has to/ may/ must/ can have)
18. ………..you please refrain from smoking while the lecture is in progress? (May/ Might/ Would/ Should)
19. I ……………… persuade him as I said.(wasn’t able to/ can’t/ mustn’t/ ought not)
20. I’m sorry to bother you while you’re working, but I …………ask you a question.(can/ had to/ must/ may)
21. He couldn’t have mean it seriously. He ……….laughed at you. (would/ couldn’t/ had/ must have)
22. we …….ensure the telegram arrives in time. (had to/ must/ ‘d rather/ might)
23. he ……..keep his family because his wages were too low. (couldn’t/mustn’t/ can’t/ didn’t have to)
24. the sea was too rough that we …………swim. (couldn’t/can’t/won’t/wouldn’t)
25. …………make an appointment to see the doctor? (May I / Could I / Will I/ Shall I )
26. Perhaps there ………. A good pro gram on the radio. (might be/ will be/ can be/ should be)
27. I ……go swimming when I was young. (a. could/b.would./ c. used to/d. both b and c)
28. ………..take this letter to the post office, please?(May you/ Must you/ Would you/none of these)
29. in our family my father ………sit at the top of the table. (used to/ had to/ ought to/must)
30 Do it as well as you ……………. (must/ will/ can/ have to)
31. I …………swim in this water: it is much too cold.(mightn’t/ mustn’t/ can’t/ don’t have to)

32. you …………… imagine my surprise when I heard the news. (can/ ought to/ will/ all of these)
33. you do some work instead of sitting there reading the paper. (would rather/ ought to/ won’t/ don’t have to)
34. be careful how you hold that jug; it ……….break easily.(may/ ought to/will/ might)
35. I’m not sure where to go for my holiday, but I ……..go to China. (should/ may/ have to/ needn’t)
36. we had free tickets, so we ……….pay to get into the concert. (didn’t have to/ couldn’t/mustn’t/ shouldn’t

Choose the best answer for each of the fllowing sentences
1. ............ if you work harder, you will be sacked.
A. Whether B. If C. However D. Unless

2. I think you should stop smoking.
A. If I am you, I will stop smoking B. If I were you, I will stop smoking
C. If I were you, I would stop smoking D. If I had been you, I would stop smoking

3. If you take the ice out of the fridge, it ...........
A. vaporizes B. melts C. heats D. disappears

4. We should do something to protect water from being polluted ........... we will have nothing to drink in the future.
A. if B. whether C. or D. unless

5. Let's knock on their door to see .......... home.
A. if they're B. unless they're C. whether they were D. if they were

6. Unless we .......... more snow, we can't go skiing.
A. will have B. have C. have had D. had

7. You'll fail the exam ........... you start revising.
A. if B. until C. when D. unless

8. Unless you wash the car, you .............. not drive it at the weekend
A. would B. could C. have to D. may

9. If Peter ............... his car before the drive, he ................ the problem of out of petrol.
A. cheked / will not get B. had checked / would not have got
C. checks / will not have got D. would be checking / will not have got

10. He stepped on the mine, and it exploded.
A. If he doesn't step on the mine, it doesn't explode.
B. If he doesn't step on the mine, it won't explode.
C. If he didn't step on the mine, it wouldn't explode.
D. If he hadn't step on the mine, it wouldn't have exploded.

Exercise 6 : Choose the best answer for each of the following sentences. 1._____have enough apples, she’ll make an apple pie this afternoon. A.Should she B. If she C. Will she D. Unless she 2.If you_____to me, you wouldn’t have got so much trouble. A. listened B. would listen C. had listened D. Would have listened 3.If you don’t know how to spell a word, you_____ look it up in the dictionary. A. must B. will C. should D. ought 4.If the sun _____, we _____for a walk. A. shines / will go B. shone / will go C. shone / would go D. had shone / would go 5.The campfire _____ if it _____ last night. A. wouldn’t be cancelled / hadn’t rained B. wouldn’t have been cancelled / hadn’t rained C. would have been cancelled / hadn’t rained D. will be cancelled / rains 6.But for our parents, we _____ successful in life. A. will never be B. would never be C. wouldn’t have be D. would have never been 7.If I _____ my wallet at home this morning, I _____ money for lunch now. A. leave / will have B. didn’t leave / would have C. hadn’t left / would have D. hadn’t left / would have had 8.It is too bad, Lam isn’t here. If he _____ here, he _____ what to do. A. were / would know B. is / will know C. had been / would have known D. was / would know 9.If we _____ the plans carefully, we would not have had so many serious mistakes. A. study B. had studied C. studied D. were studying 10.I will never talk to you again _____ you apologize me _____ your being rude. A. if / for B. unless / for C. or / of D. whether / or 11._____if you work harder, you will be sacked. A. Whether B. If C. However D. Unless 12.I think you should stop smoking. A. If I am you, I will stop smoking. B. If I were you, I will stop smoking. C. If I were you, I would stop smoking. D. If I had been you, I would stop smoking. 13.If you take the ice out of the fridge, it _____. A. vaporizes B. melts C. heats D. disappears 14.We should do something to protect water from being polluted _____we will have nothing to drink in the future. A. if B. whether C. or D. unless 15.Let’s knock on their door to see _____home. A. if they’re B. unless they’re C. whether they were D. if they were 16.Unless we _____more snow, we can’t go skiing. A. will have B. have C. have had D. had 17.You’ll fail the exam _____ you start revising. A. if B. until C. when D. unless 18.Unless you wash the car, you _____not drive it at the weekend. A. would B. could C. have to D. may 19.If Peter _____his car before the drive, he _____the problem of out of petrol. A. checked / will not get B. had checked / would not have got C. checks / will not have got D. would be checking / will not have got 20.He stepped on the mine, and it exploded. A.If he doesn’t step on the mine, it doesn’t explode. B.If he doesn’t step on the mine, it won’t explode. C.If he didn’t step on the mine, it wouldn’t explode. D.If he hadn’t stepped on the mine, it wouldn’t have exploded. 21. In my experiments, the liquid is cooled to 32ºF. It always freezes. A.If you cool the liquid to 32 degrees, it froze. B.If you cooled the liquid to 32 degrees, it would freeze. C.If you cool the liquid to 32 degrees, it will freeze. D.If you had cooled the liquid to 32 degrees, it would have frozen. 22.It may rain this afternoon. I hope it doesn’t because I don’t want the match to be cancelled. A. If it rains, the match is cancelled. B. If it rains, the match will be cancelled. C. if it rained, the match would be cancelled D. If it had rained, the match would have been cancelled. 23.Unfortunately, I don’t know Philosophy, so I can’t answer your question. A.If I know Philosophy, I can answer your question. B.If I know Philosophy, I will be able to answer your question. C.If I knew Philosophy, I would be able to answer your question. D.If I had known Philosophy, I would have been able to answer your question. 24._____ there are some more ideas, we can end the meeting now. A. If B. As if C. Unless D. In case 25.If he _____with us now, he _____ the beauty of nature of the National Park. A. is / can enjoy B. was / will enjoy C. has been / would enjoy D. were / could enjoy 26.If they had searched more carefully, they...the watch sooner. A. will find B. would find C. found D. would have found 27.If I had got up early, I _____ to have breakfast now. A. have B.I had C. would have D. would have had 28.I cannot buy a new computer _____ I save enough money. A. if B. even if C. unless D. as if 29.Most people you meet will be polite to you _____. A. if you are polite to them B. if you will be polite to them C. unless you are polite to them D. if you were polite to them 30.If you do so, it _____ the matter worse. A. makes only B. would only make C. will only make D. had only made 31.You _____ English fluently unless you practice it every day. A. will speak B. will not speak C. can speak D. did not speak 32.Hurry up _____ you will miss the bus and be late for school. A. if B. and C. or D. as 33.You will get a good seat if you _____ first. A. come B. came C. have come D. will come 34.Sam will not graduate_____. A. if he passed all the tests B. if he does not pass all the tests. C. unless he passes all the tests D. unless he had passed all the tests. 35.If I had time, I would go with you. A.I am free and surely go with you. B.I am too busy to go with you. C. I will go with you because I have time. D. I am free enough to go with you. 36.If Margaret hadn’t been wearing a seat belt, she.... Injured. A. has been B. would has been C. would be D. would have been 37.If I _____ the rain yesterday, I_____ ill. A. had not caught / would have been B. had not caught / would have not been C. have not caught / were not D. have not caught / would have been 38.He looked frightened as if he _____ a ghost. A. sees B. is seeing C. has seen D. had seen 39.What _____if there _____ a serious nuclear accident. A. will happen / was B. happens / were C. would happen / were D. would happen / had been

Lần sau bn vt thì cách ra cho dễ nhìn nhé~~~~

Choose the best answer for each of the following sentences. 1._____have enough apples, she’ll make an apple pie this afternoon. A.Should she B. If she C. Will she D. Unless she

2.If you_____to me, you wouldn’t have got so much trouble.

A. listened B. would listen C. had listened D. Would have listened

3.If you don’t know how to spell a word, you_____ look it up in the dictionary.

A. must B. will C. should D. ought

4.If the sun _____, we _____for a walk.

A. shines / will go B. shone / will go C. shone / would go D. had shone / would go

5.The campfire _____ if it _____ last night.

A. wouldn’t be cancelled / hadn’t rained B. wouldn’t have been cancelled / hadn’t rained C. would have been cancelled / hadn’t rained D. will be cancelled / rains

6.But for our parents, we _____ successful in life.

A. will never be B. would never be C. wouldn’t have be D. would have never been

7.If I _____ my wallet at home this morning, I _____ money for lunch now.

A. leave / will have B. didn’t leave / would have C. hadn’t left / would have D. hadn’t left / would have had

8.It is too bad, Lam isn’t here. If he _____ here, he _____ what to do.

A. were / would know B. is / will know C. had been / would have known D. was / would know

9.If we _____ the plans carefully, we would not have had so many serious mistakes.

A. study B. had studied C. studied D. were studying

10.I will never talk to you again _____ you apologize me _____ your being rude.

A. if / for B. unless / for C. or / of D. whether / or

Bai 1 : Underline the correct from

1)Children must /have to start school when they are five

2)In many countries ,you should /must wear a seat belt in the car -it's the law

3)I know you like sugar but you shouldn't /don't have to eat quite so much - it's bad for

4)I'm not working tomorrow ,so I mustn't /don't have to get up early

5) The manager suggested that we have to /should try to find another hotel

6)Kids should /have to wear a life vest .That's bur regulation

7)You mustn't /don't have to smoke in here ;smoking isn't allowed in the airport

8)You must /should hand in your homework on Tuesday or your mark will be zero

9)You have to /don't have to dress up for the party .Wear whatever you fell comfortable in

10)You should /have to ask the teacher to help you if you don't understand the lesson

VII. Choose the sentence which has the same meaning as the root one.
1. " I couldn't have made it without your help' means
A. I couldn't have made it if you helped me.
B. I couldn't have made it if you had helped me.
C. I couldn't have made it if you hadn't helped me.
D. I couldn't have made it if you didn't help me.
2. She didn't stop her car because she didn't see the signal.
A. If she saw the signal, she would stop her car.
B. If she had seen the signal, she would stop her car.
C. If she had seen the signal, she would have stopped her car.
D. If she saw the signal, she would have stopped her car.
3. His flight was deplayed so he couldn't be here on time.
A. He would be here in time if his flight were not deplayed.
B. He would have been here in time if his flight hadn't been deplayed.
C. He would be here in time if his flight hadn't been deplayed.
D. He would have been here in time if his flight weren't deplayed.
4. Without your help, I couldn't overcome the problem.
A. If you don't help me, I can't overcome problem.
B. If you didn't help me, I couldn't overcome problem.
C. If you hadn't helped me, I couldn't overcome problem.
D. If you hadn't helped me, I couldn't have overcome problem.

1 Tom had been driving all day. He was tired and wanted to stop.

Tom, who had been driving all day was tired and wanted to stop.

2 Ann had been sleeping in the back of the car. She felt quite fresh and wanted to go on.

Ann, who had been sleeping in the back of the car, felt quite fresh and wanted to go on.

3 Paul wanted to take the mountain road. His tyres were nearly new.

Paul, whose tyres were nearly new, wanted to take the mountain road.

4 Jack's tyres were very old. He wanted to stick to the tarred road.

jack, whose tyres were very old,wanted to stick to the tarred road.

5 Mary didn't know anything about mountains. She thought it would be quite safe to climb alone.

marry, who didn't know anythingabout mountains, thought it would be quite safe to climb alone.

6 He gave orders to the manager. The manager passed them on to the foreman.

He gave orders to the manager who passed them on to the foreman.

7 She said that the men were thieves. This turned out to be true.

She said that the men were thieves, turned out to be true.

8 The matter was reported to the Chief of Police. He ordered us all to be arrested.

The matter was reported to the Chief of Police who ordered us all to be arrested.

9 In prison they fed us on dry bread. Most of it was mouldy.

In prison they fed us on dry bread, Most of which was mouldy.

10 We slept in the same room as a handcuffed prisoner. His handcuffs rattled every time he moved.

We slept in the same room as a handcuffed prisoner whose handcuffs rattled every time he moved.

11 We lit a fire. It soon dried out our clothes.

We lit a fire which soon dried out our clothes.

12 They rowed across the Atlantic. This had never been done before.

They rowed across the Atlantic which had never been done before

13 The lorry crashed into a bus-load of schoolchildren. Six of them were slightly injured.

The lorry crashed into a bus-load of schoolchildren. Six of whom were slightly injured.

14 She refuses to use machines. This makes her work more arduous.

She refuses to use machines which makes her work more arduous.

15 I met Mary. She asked me to give you this.

I met Mary who asked me to give you this.

16 The women prayed aloud all night. This kept us awake

The women prayed aloud all night which kept us awake

. 17 The river bed is uneven and you may be in shallow water one moment and in deep water the next. This makes it unsafe for non-swimmers.

The river bed is uneven and you may be in shallow water one moment and in deep water the next which makes it unsafe for non-swimmers.

18 Mary said that there should be a notice up warning people. Mary's children couldn't swim.

Mary whose children couldn't swim, said that there should be a notice up warning people.

19 Ann said that there were far too many notices. Ann's children could swim very well.

ann, whose children could swim very well, said that there were far too many notices.

20 He paid me £5 for cleaning ten windows. Most of them hadn't been cleaned for at least a year.

He paid me £5 for cleaning ten windows. Most of which hadn't been cleaned for at least a year.

21 Jack, the goalkeeper, and Tom, one of the backs, were injured in last Saturday's match. Jack's injuries were very slight. He is being allowed to play in today's match. This is a good thing because the team hasn't got another goalkeeper. (Combine the last three sentences only.)

Jack, whose injuries were very slight, is being allowed to play, which is a good thing because the team hasn't got another goalkeeper.

22 But Tom's leg is still in bandages. He will have to watch the match from the stand.

Tom, whose leg is still in bandages, will have to watch the match from the stand.

23 Mr White didn't get a seat on his train this morning. This put him in a bad temper, and caused him to be very rude to his junior partner. The junior partner in turn was rude to the chief clerk; and so on all the way down to the office boy.

Mr. White didn't get a seat on the train this morning, which put him in a bad temper and caused him to be very rude to his junior clerk.

24 On Monday Tom's boss suddenly asked for a report on the previous week's figures. Tom had a hangover. He felt too sick to work fast. (Combine the last two sentences only.)

Tom, who had a hangover, felt too sick to work fast.

25 His boss didn't drink. He saw what was the matter and wasn't sympathetic.

His boss, who didn’t drink, saw what was the matter and wasn't sympathetic.

26 In the afternoon he rang Tom and asked why the report still hadn't arrived. The report should have been on his desk by 2 o'clock.

The report, which should have been on his desk by 2.00, still hadn’t arrived.

27 Tom's headache was now much worse. He just put the receiver down without answering. This was just as well, as if he'd said anything he would have been very rude.

Tom, whose headache was now much worse, put down the receiver without answering, which was just as well, as if he'd said anything he would have been very rude.

28 Fortunately Ann, the typist, came to Tom's assistance. Ann rather liked Tom.

Ann, who liked Tom, came to Tom's assistance

29 Even so the report took three hours. It should have taken an hour and a half.

the report, which should have taken an hour and a half, took three hours

30 I went to Munich. I had always wanted to visit Munich.

to Munich, which I had always wanted to visit

ôi mé, phục :D

Bài 3: Chọn đáp án đúng.

1. I would have visited you before if there _____ quite a lot of people in your house.

A. hadn't B. hadn't been C. wouldn't be D. wasn't

2. If you had caught the bus, you _____ late for work.

A. wouldn't have been B. would have been

C. wouldn’t be D. would be

3. If I _____, I would express my feelings.

A. were asked B. would ask

C. had been asked D. asked

4. If _____ as I told her, she would have succeeded.

A. she has done B. she had done

C. she does D. she did

5. Will you be angry if I _____ your pocket dictionary?

A. stole B. have stolen C. were to steal D. steal

6. You made a mistake by telling her a lie. It _____ better if you _____ to her.

A. would have been / hadn't lied B. would be / didn't lie

C. will be / don't lie D. would be / hadn't lied

7. John would be taking a great risk if he _____ his money in that business.

A. would invest B. invested C. had invested D. invests

8. She wouldn't have given them all that money if we _____ her to.

A. wouldn’t advise B. won't advise

C. hadn't advised D. didn't advise

9. If the tree hadn't been so high, he _____ it up to take his kite down.

A. could have climbed B. climb

C. is climbing D. climbed

10. If the wall weren't so high, he _____ it up to take his ball down.

A. climbed B. could climb C. is climbing D. climb

11. If I _____ her phone number, I _____ her last night

A. had known / could have phoned B. knew / would have phoned

C. know / can phone D. knew / could phone

12. If he ______ the truth, the police wouldn’t arrest him.

A. tells B. told C. had told D. would tell

13. If you press that button what _____?

A. would happen B. would have happened

C. will happen D. happen

14. She says if she _____ that the traffic lights were red she _____.

A. had realized / would stop B. realized / could have stopped

C. has realized / stopped D. had realized / would have stopped

15. I am very thin. I think, if I _____ smoking, I might get fat.

A. stop B. had stopped C. will stop D. stopped

16. If I _____ that yesterday, I _____ them.

A. had discovered / would inform

B. had discovered / would have informed

C. had discovered / could inform

D. discovered / can inform

17. If you _______ to the course regularly, they ________ a certificate last year.

A. go / gave B. go / give

C. had gone / would have given D. went / would give

18. I think he is not at home. If he _____ in, he ______ the phone.

A. was / answered B. were / would answer

C. were / would have answered D.had been / would have answered

19. If I ______ in London now, I could visit British Museum.

A. were B. had been C. have been D. would be

20. If Columbus _______ money from Queen Isabella, he _______ across the Atlantic.

A. do not receive / could not sail

B. had not received / might not have sailed

C. did not receive / might not have sailed

D. would not receive / might not sail

1. I would have visited you before if there _____ quite a lot of people in your house.

A. hadn't B. hadn't been C. wouldn't be D. wasn't

2. If you had caught the bus, you _____ late for work.

A. wouldn't have been B. would have been

C. wouldn’t be D. would be

3. If I _____, I would express my feelings.

A. were asked B. would ask

C. had been asked D. asked

4. If _____ as I told her, she would have succeeded.

A. she has done B. she had done

C. she does D. she did

5. Will you be angry if I _____ your pocket dictionary?

A. stole B. have stolen C. were to steal D. steal

6. You made a mistake by telling her a lie. It _____ better if you _____ to her.

A. would have been / hadn't lied B. would be / didn't lie

C. will be / don't lie D. would be / hadn't lied

7. John would be taking a great risk if he _____ his money in that business.

A. would invest B. invested C. had invested D. invests

8. She wouldn't have given them all that money if we _____ her to.

A. wouldn’t advise B. won't advise

C. hadn't advised D. didn't advise

9. If the tree hadn't been so high, he _____ it up to take his kite down.

A. could have climbed B. climb

C. is climbing D. climbed

10. If the wall weren't so high, he _____ it up to take his ball down.

A. climbed B. could climb C. is climbing D. climb

11. If I _____ her phone number, I _____ her last night

A. had known / could have phoned B. knew / would have phoned

C. know / can phone D. knew / could phone

12. If he ______ the truth, the police wouldn’t arrest him.

A. tells B. told C. had told D. would tell

13. If you press that button what _____?

A. would happen B. would have happened

C. will happen D. happen

14. She says if she _____ that the traffic lights were red she _____.

A. had realized / would stop B. realized / could have stopped

C. has realized / stopped D. had realized / would have stopped

15. I am very thin. I think, if I _____ smoking, I might get fat.

A. stop B. had stopped C. will stop D. stopped

16. If I _____ that yesterday, I _____ them.

A. had discovered / would inform

B. had discovered / would have informed

C. had discovered / could inform

D. discovered / can inform

17. If you _______ to the course regularly, they ________ a certificate last year.

A. go / gave B. go / give

C. had gone / would have given D. went / would give

18. I think he is not at home. If he _____ in, he ______ the phone.

A. was / answered B. were / would answer

C. were / would have answered D.had been / would have answered

19. If I ______ in London now, I could visit British Museum.

A. were B. had been C. have been D. would be

20. If Columbus _______ money from Queen Isabella, he _______ across the Atlantic.

A. do not receive / could not sail

B. had not received / might not have sailed

C. did not receive / might not have sailed

D. would not receive / might not sail

viết dính chùm thế

lười xuống dòng :vvv

có xíu sự cố mik có viết lại bài mới rùi, bạn biết bạn giúp mik giải với

1. comes
2. find
3. lived
4. arrived
5. will phone
6. would give
7. would
8. can go
9. will have

10. stop

11. were
12. had spoken

13. had listened – would have performed
14. comes – will have

Gạch chân dưới đáp án đúng:
1. If she (come / comes / came / had come) late again, she'll lose her job.
2. I'll let you know if I (find / finds / found / had found) out what's happening.
3. If we (live / lived / would live / had lived) in a town, life would be better.
4. I'm sure he wouldn't mind if we (arrive / arriving / arrived / had arrived) early.
5. We (will phone / would phone / phoned / had phoned) you if we have time.
6. If I won the lottery, I (gave / had given / will give / would give) you half the money.
7. It (will / would / can / may) be a pity if she married Fred.
8. If I'm free on Saturday, I (to go / could go / went / can go) to the mountains.
9. She (will has / had / will have / have) a nervous breakdown if she goes on like this.
10. I know I'll feel better if I (will stop / stopped / stop / had stopped) smoking.
11. If I (am / were / will be / had been) you, I would help him.
12. I could have understood him if he (speaks / spoke / had spoken / would speak) more slowly.
13. He didn't listen to the teacher. If he (listens / listened / has listened / had listened) carefully, he (will performed / would perform / would have performed / had performed) well in the examination.
14. He's waiting for his mother to come back from Chicago. If his mother (come / comes / will come / came) home, he?? đề thiếu