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17 tháng 1 2019

1.I've just seen David with a shovel in his hand. He.....in the garden right now.

a.may be working

b.must be working

c.should work

d.is working

2.Modern equipment.....long time ago, but better late than never.

a.should have import

b.might have been imported

c.must have been imported

d.should have been imported

3.Is the man you saw yesterday Bill's father? It.....Bill's father because he went to Europe two days ago.

a.can't have been

b.couldn't be

c.may not have been

d.must have been

17 tháng 1 2019

Câu 1 sao không phải là a?

20 tháng 1 2019

1.Yesterday she went for a picnic with her family. So she____at home when you came.

a.can't have been

b.mustn't have been

c.needn't have been

d.might not have been

2.She___more food because there was a plenty of it in the fridge.

a.needn't have bought

b.can't have bought

c.should have bought

d.must have bought

1. the last time played chess was in 2000 - i have not ... 2. i have never met such a famous person before - it is ... 3. my friend's mother has been teaching english in this school for a long time - my friend's mother started ..... 4.she has never been so angry before - this is ... 5. the last time it snowed here was six years ago - it hasn't ... 6. he hasn't visited his parents for a year - it's ... 7. john and mary moved to edinburgh twenty years ago- it's now .... 8. john began...
Đọc tiếp

1. the last time played chess was in 2000 - i have not ...

2. i have never met such a famous person before - it is ...

3. my friend's mother has been teaching english in this school for a long time - my friend's mother started .....

4.she has never been so angry before - this is ...

5. the last time it snowed here was six years ago - it hasn't ...

6. he hasn't visited his parents for a year - it's ...

7. john and mary moved to edinburgh twenty years ago- it's now ....

8. john began playing the piano ten years ago - john has ...

9. i have never read such a romantic story - this is ...

10. they last visited me five years ago - they havn't ....

11. he hasn't been back to his homework for 20 years now - it's ...

12. it's nearly twenty years since my father saw his brother - my father ...

13. when did you last ride a bike ? - how long ...

14. we haven't been to london since 1998 - the last ...

15. my wait in the queue has lasted forty minutes so far - i ...

16. i've never seen such a bad film as that one . - that's ....

17. the last time nancy came here was in 1968 - nancy hasn't ...

18. how long have they lived in this city ? - how long ago ...

19. whe did you frist know him ? - how ...

20. philips went on a trip around the world three years ago - it's ..

21. i'm asking you this quesion for the third time - this is ...

22. after that she never got in touch with him - that was the ...

23. we haven't had a party since last christmas - the last time ...

24. she began playing piano six years ago - she has ...

25. when did you last meet him ? how long ...

1
14 tháng 8 2019

1. the last time played chess was in 2000

- i have not played chess since 2000.

2. i have never met such a famous person before

- it is the first time i have ever met such a famous person.

3. my friend's mother has been teaching english in this school for a long time

- my friend's mother started teaching english in this school a long time ago

4.she has never been so angry before

- this is the first time she has been so angry.

5. the last time it snowed here was six years ago

- it hasn't snowed here for six years.

6. he hasn't visited his parents for a year

- it's year since he last visited his parents.

7. john and mary moved to edinburgh twenty years ago

- it's now twenty years since John and Mary moved to Edinburgh.

8. john began playing the piano ten years ago

- john has played the piano for ten years.

9. i have never read such a romantic story

- this is the most romantic story I have ever read.

10. they last visited me five years ago

- they haven't visited me for five years.

11. he hasn't been back to his homework for 20 years now

- it's now 20 years since he last go back to his homework.

12. it's nearly twenty years since my father saw his brother

- my father hasn't seen his brother for nearly twenty years.

13. when did you last ride a bike ?

- how long have you not ridden a bike?

14. we haven't been to london since 1998

- the last time we went to London was in 1998.

15. my wait in the queue has lasted forty minutes so far

- i have been waiting in the queue for forty minutes.

16. i've never seen such a bad film as that one .

- that's the worst film I have ever seen.

17. the last time nancy came here was in 1968

- nancy hasn't come here since 1968.

18. how long have they lived in this city ?

- how long ago did they start to live in this city?

19. when did you first know him ?

- how long have you known him?

20. philips went on a trip around the world three years ago

- it's 3 years since philips went on a trip around the world.

Chọn đáp án đúng: 1. As time goes by, he__________more and more eccentric. A. Becomes B. is becoming C. has become D. has been becoming 2. I__________ the living room by the time Dad comes home. He__________ so surprised. A. Will paint/will be B. will be painting/is C. will have painted/will be D. will have painted/is 3. It's the coldest winter we__________ in Greece. A. Ever experience B. ever experienced C. were ever experiencing D. have ever experienced 4. When he___________ was...
Đọc tiếp

Chọn đáp án đúng:
1. As time goes by, he__________more and more eccentric.

A. Becomes B. is becoming C. has become D. has been becoming

2. I__________ the living room by the time Dad comes home. He__________ so surprised.

A. Will paint/will be B. will be painting/is C. will have painted/will be D. will have painted/is

3. It's the coldest winter we__________ in Greece.

A. Ever experience B. ever experienced C. were ever experiencing D. have ever experienced

4. When he___________ was younger, he the cinema every week.

A. Was used to going B. used to go C. was going D. had gone

5. They________for a mile when they___________that someone___________missing.

A. Had walked/ had realized/ was B. had been walking/ realized/ had been

C. had been walking/ realized/ was D. had walked/ had realized/ had been

6. As part of my job, I_________ abroad a lot, so I_______ to improve my English.

A. Travel/ need B. am travelling/ need C. am travelling/ am needing D. travel/ am needing

7. I_________ at my mother's house this week because I__________ my house painted.

A. Sleep/ have B. am sleeping/ have C. sleep/ am having D. am sleeping/ am having

8. I you should buy him a tie. He___________to dress formally.

A. Am thinking/ likes B. think/likes C. think/ is liking D. am thinking/ has liked

9. As a teenager, I_________ things my parents__________ of.

A. Would do/ didn't approve B. used to do/ weren't approving

C. used to do/ didn't approve D. would do/ weren't approving

10. "Hurry up! We're waiting for you. What's taking you so long?"

"I________ for an important phone call. Go ahead and leave without me."

A. Wait B. will wait C. am waiting D. have waited

11. Robert is going to be famous some day. He_________in three movies already. ~ I'm sure he'll be a star.

A. Has been appearing B. had appeared C. has appeared D. appeared

12. Where's Polly? ~She_________.

A. Is in her room studying B. in her room is studying

C. studies in her room D. has in her room studied

13. Hello? Alice? This is Jeff. How are you? ~ Jeff? What a coincidence! I_________ about you when the phone rang.

A. Was just thinking B. just thought C. have just been thinking D. was just thought

14. What___________ about the new simplified tax? ~It's more confusing than the old one.

A. Are you thinking B. do you think C. have you thought D. have you been thinking

15. When is Mr. Fields planning to retire? ~ Soon, I think. He________ here for a long time. He'll probably retire next year or the year after that.

A. Worked B. had been working C. has been working D. is working

16. Why did you buy all this sugar and chocolate? ~ I_________a delicious dessert for dinner tonight.

A. Make B. will make C. am going to make D. will have made

17. Let's go! What's taking you so long? ~ I'll be there as soon as I__________my keys.

A. Found B. will find C. find D. am finding

18. Next week when there______ a full moon, the ocean tides sill be higher.

A. Is being B. is C. will be D. will have been

19. While I______TV last night, a mouse ran across the floor.

A. Watch B. watched C. was watching D. am watching

20. Fish were among the earliest forms of life. Fish__________ on earth for ages and ages.

A. Existed B. are existing C. exist D. have existed

21. The phone ________constantly since Jack announced his candidacy for president this morning.

A. Has been ringing B. rang C. had rung D. had been ringing

22. The earth_________on the sun for its heat and light.

A. Is depend B. depending C. has depended D. depends

23. I don't feel good. I________ home from work tomorrow.

A. Am staying B. stay C. will have stayed D. stayed

24. Today there are weather satellites that beam down information about the earth's atmosphere. In the last two decades, space exploration_________ great contributions to weather forecasting.

A. Is making B. has made C. made D. makes

25. On July 20th, 1969, Astronaut Neil Armstrong_________ down onto the moon, the first person ever to set foot on another celestial body.

A. Was stepping B. stepped C. has stepped D. was step

26. The plane's departure was delayed because of mechanical difficulties. When the weary passengers finally boarded the aircraft, many were annoyed and irritable because they___________ in the airport for three and a half hours.

A. Are waiting B. were waiting C. have been waiting D. had been waiting

27. If coastal erosion continues to take place at the present rate in another fifty years, this beach_______anymore.

A. Doesn't exist B. isn't going to exist C. isn't existing D. won't be existing

28. Homestead High School's football team_______a championship until last season, when the new coach led them to take first place in their league.

A. Has never won B. is never winning C. had never been winning D. had never won

29. To be able to qualify as an interpreter, many years of intensive language study are required for non-native speakers. By the end of this year, Chen________English for three years, but he will still need more training and experience before he masters the language.

A. Will be studying B. has studied C. will have been studying D. has been studying

30. In our hospital, patients________ every morning.

A. Are examined B. have examined C. can examine D. were examining

1
9 tháng 11 2019

1b

2d

3d

4b

5c

6 b

7a

8b

9c

10b

11 c

12c

13 c

14b

15 b

16 c

17a

18b

19c

20 d

21a

22 b

23a

24 b

25b

26c

27 d

28a

29b

30a

8 tháng 4 2018

43. although he took taxi, Bill still arrived late for the concert.

==> Despite..taking taxi, Bill still arrived late for the concert..

44. Theater seats can be booked by telephone.

==>You....can book theater seats by telephone........

45. Your little brother's hir is so long that he can't see through it. ==> Your little brother ought to.....cut his har so that he can see through it........

46. I've never been to less exciting concert.

==>It was the least exciting concert I have ever been

47. '' I'll never come back here again,'' said the angry tourist.

==> The angry tourist..said he would never come back there again...

48. The red car is 25.000.Thebluecaris(Comparision)

=> the red car is more expensive than the blue car.

49. Because of being lost, we stopped to ask policeman for directions.

==>We......we stopped to ask policeman for directions because we were lost.........

50. We re worried because we have to live very far from our parents.

==>We wish.....we didn't have to live very far from our parents. ........

51. He hasn't been to the doctor's for over yers.

==> He hasn't had .....the doctor's for over yers.....

52. That old keyboard is not worth repairing.

==> It is pointless to.....repairing for that old keyboard......

8 tháng 4 2018

52. It is pointless to V e nhé

1. He is unreliable. what he says___ be belived 1. cannot B. must not C. may not D. might not 2. I was reading the book last night before I went to bed. I never took it out of this room. It___ be lying around here somewhere. Where __it be? A. might- needn't B. can-should C. shoudn't-may D. must can 3. When you have a small child in the house, you___leave small objects lying around. SUch objects___ be swallowed, causing serious injury or even death A. should-must B. should not- might C....
Đọc tiếp

1. He is unreliable. what he says___ be belived

1. cannot B. must not C. may not D. might not

2. I was reading the book last night before I went to bed. I never took it out of this room. It___ be lying around here somewhere. Where __it be?

A. might- needn't B. can-should C. shoudn't-may D. must can

3. When you have a small child in the house, you___leave small objects lying around. SUch objects___ be swallowed, causing serious injury or even death

A. should-must B. should not- might C. needn't -may D. mustn't- can't

4. Jenny's engagement ring was precious. It ___ have cost a fortune

A. must B. should C. can D. needn't

5. I___ be at the meeting by 10:00 I will probably ___ take a taxi if I want to be on time

A. must- have to B. may- must C. should- needn't D. mustn't- shouldn't

6. You____ forget to pay the rent tomorrow. The landlord is very stict about paying on time

A. needn't B. mustn't C/ do not have to D. may not

7. Iam not deaf. You__ shout

A. must B. mustn't C. need D. needn't

8. The lamp_____ be broken. Maybe the light bulb just burned out

A. should not B. might not C. must have been D. shiuld have been

9. It is a stop secret. You___tell anyone about it

A. Mustn't B. needn't C. mightn't D won't

10. We have plenty of time for doing the work. We __ be hurried

A. needn't B. shouldn't C. mustn't D. mayn't

11. You ___ touch that switch, whatvever you do

A. mustn't B. needn't C. won't D. wouldn't

1
31 tháng 3 2018

1. He is unreliable. what he says___ be belived

1.A cannot B. must not C. may not D. might not

2. I was reading the book last night before I went to bed. I never took it out of this room. It___ be lying around here somewhere. Where __it be?

A. might- needn't B. can-should C. shoudn't-may D. must can

3. When you have a small child in the house, you___leave small objects lying around. SUch objects___ be swallowed, causing serious injury or even death

A. should-must B. should not- might C. needn't -may D. mustn't- can't

4. Jenny's engagement ring was precious. It ___ have cost a fortune

A. must B. should C. can D. needn't

5. I___ be at the meeting by 10:00 I will probably ___ take a taxi if I want to be on time

A. must- have to B. may- must C. should- needn't D. mustn't- shouldn't

6. You____ forget to pay the rent tomorrow. The landlord is very stict about paying on time

A. needn't B. mustn't C/ do not have to D. may not

7. I am not deaf. You__ shout

A. must B. mustn't C. need D. needn't

8. The lamp_____ be broken. Maybe the light bulb just burned out

A. should not B. might not C. must have been D. should have been

9. It is a stop secret. You___tell anyone about it

A. Mustn't B. needn't C. mightn't D won't

10. We have plenty of time for doing the work. We __ be hurried

A. needn't B. shouldn't C. mustn't D. mayn't

11. You ___ touch that switch, whatvever you do

A. mustn't B. needn't C. won't D. wouldn't

27 tháng 7 2019

Complete the conversations. Put in a to-infinitive or an in-form

1 A. Tom seems to enjoy watching football matches

B . yes, he loves.....watching ...manchester united play

2 A. Do you think they'll approve the plan ?

B . yes, I'm quite sure they'll decide..to approve...it

3. Do you want to come with me or wait here

I'd prefer...to come...with you if that's OK

4 You wear a uniform at school, don't you ?

Yes, I have to, although I dislike....wearing.....it

5. I'm glad I don't work as late as Sarah does

Me too. I wouldn't like....to work ....such long hours

6. Have ICM bought the company ?

Well, they've offered.. to buy..it

7. How long have you been working here ?

For about three years. But now I need a new job. I can't stand..working ..here any more

8 What time will you be back ?

Oh, I expect....to be...back some time around nine

9. I'm sorry you had to wait all that time

Oh, it's all right. I don't mind ưaiting

27 tháng 7 2019

9.waiting

Chọn đáp án đúng: 1. I_________ in Can Tho for 18 years, but now I'm living in Ho Chi Minh city. A. Have lived B. live C. lived D. have been living 2. I wondered why he_________ his job. A. Has changed B. changes C. used to change D. had changed 3. The department store__________ by the Johnson for many years. A. Has been run B. is run C. runs D. has run 4. Kate________ 10 comedies this summer. A. Has watched B. had watched C. will have watched D. watched 5. The number of...
Đọc tiếp

Chọn đáp án đúng:

1. I_________ in Can Tho for 18 years, but now I'm living in Ho Chi Minh city.

A. Have lived B. live C. lived D. have been living

2. I wondered why he_________ his job.

A. Has changed B. changes C. used to change D. had changed

3. The department store__________ by the Johnson for many years.

A. Has been run B. is run C. runs D. has run

4. Kate________ 10 comedies this summer.

A. Has watched B. had watched C. will have watched D. watched

5. The number of footballers________ for the last ten years.

A. Has increased B. was increasing C. have increased D. were increasing

6. Don't worry! We_______for you at 6 o'clock tomorrow.

A.Will wait B. will be waiting C. wait D. are waiting

7. Mary__________the country by the time this letter reaches her.

A. Is going to leave B. will leave C. is leaving D. will have left

8. By this time next year, my father________here for 25 years.

A. Are going to work B. will be working C. will have been working D. will work

9. Tim_________in three movies already. I think he'll be a star some day.

A. Had appeared B. has appeared C. was appearing D. is appearing

10. They_________the door. No one can get in now.

A. Have locked B. had locked C. locked D. lock

11. The existence of many stars in the sky__________ us to suspect that there may be life on another planet.

A. Have led B. leads C. lead D. leading

12. They___________ the town hall for the past three years in fact, but they it yet.

A. Built/ hadn't finished B. had built/ didn't finish

C. have been building/ haven't finished D. have built/ weren't finishing

13. When I met Jim, he__________ from his university already.

A. Graduated B. has graduated C. had graduated D. was graduating

1
9 tháng 11 2019

Chọn đáp án đúng:

1. I_________ in Can Tho for 18 years, but now I'm living in Ho Chi Minh city.

A. Have lived B. live C. lived D. have been living

2. I wondered why he_________ his job.

A. Has changed B. changes C. used to change D. had changed

3. The department store__________ by the Johnson for many years.

A. Has been run B. is run C. runs D. has run

4. Kate________ 10 comedies this summer.

A. Has watched B. had watched C. will have watched D. watched

5. The number of footballers________ for the last ten years.

A. Has increased B. was increasing C. have increased D. were increasing

6. Don't worry! We_______for you at 6 o'clock tomorrow.

A.Will wait B. will be waiting C. wait D. are waiting

7. Mary__________the country by the time this letter reaches her.

A. Is going to leave B. will leave C. is leaving D. will have left

8. By this time next year, my father________here for 25 years.

A. Are going to work B. will be working C. will have been working D. will work

9. Tim_________in three movies already. I think he'll be a star some day.

A. Had appeared B. has appeared C. was appearing D. is appearing

10. They_________the door. No one can get in now.

A. Have locked B. had locked C. locked D. lock

11. The existence of many stars in the sky__________ us to suspect that there may be life on another planet.

A. Have led B. leads C. lead D. leading

12. They___________ the town hall for the past three years in fact, but they it yet.

A. Built/ hadn't finished B. had built/ didn't finish

C. have been building/ haven't finished D. have built/ weren't finishing

13. When I met Jim, he__________ from his university already.

A. Graduated B. has graduated C. had graduated D. was graduating

1. I would have visited you before if there _____ quite a lot of people in your house. A. hasn't B. hasn'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...
Đọc tiếp

1. I would have visited you before if there _____ quite a lot of people in your
house.
A. hasn't
B. hasn'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 / hasn't lied
B. would be / didn't lie
C. will be / don't lie
D. would be / hasn't lied
7. John would be taking a great risk if he _____ his money in that business.
A. would invest
B. Conc
C. had involved
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 hasn'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
21. If she …………… the lottery last year, She ………… rich now.
A. have won / would be
B. had won / would be
C.won / would be
D. wins / will be

22. If I …………… the homework last night, I …………… bonus today.
A. had done / would get
B. had done / would have got
C. done / would get
D. does / will get
23. If we had played this game yesterday, we …………… a lot of money now.
A. will have
B. may have
C. would have had
D. would have
24. If it ……………… last night, it would be cold today.
A. had rained
B. rained
C. have rained
D. was raining
25. If she …………… to me, she ……………… in trouble right now.
A. had listened / would be
B. had listened / would have be
C. had listened / would not be
D. A & B
26. If it had rained one hour ago, the streets ………… wet now.
A. would have be
B. will be
C. be
D. would be
27. If I ………………. to the beach yesterday, I would be tired today.
A. have gone
B. goes
C. had gone
D. A & B
28. If they had gone to school yesterday, they ……… .. to the museum now
A. would go
B. will go
C. could go
D. A&C
29. If he had done exercise last night, he ……… soccer right now.
A. will play
B. can play
C. plays
D. could play.
30. If Nina had not gone out last week, she ……………… die now.
A. will
B. would
C. could
D. B&C

1
13 tháng 2 2020

1. I would have visited you before if there _____ quite a lot of people in your
house.
A. hasn't
B. hasn'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 / hasn't lied
B. would be / didn't lie
C. will be / don't lie
D. would be / hasn't lied
7. John would be taking a great risk if he _____ his money in that business.
A. would invest
B. Conc
C. had involved
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 hasn'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
10 câu còn lại bạn tự luyện nhé