Question 1: The manager ___________ the store before I arrived.
A. closed B. had closed C. has closed D. was closed
Question 2: When we see Mr. Minh tomorrow, I ___________ him of that.
A. will remind B. remind C. have reminded D. reminded
Question 3: When I got home, I found that water ___________ down the kitchen walls.
A. ran B. was running C. has run D. had been running
Question 4: After he ___________ his English course, he went to England to continue his study.
A. has finish B. had finished C. was finished D. would finish
Question 5: While my father ___________ a film on TV, my mother was cooking dinner.
A. watched B. was watching C. had watched D. watches
Question 6: I don’t think he ___________ in the thirty years I ___________ him.
A. had changed – have known B. has changed – have known
C. had changed – had known D. has changed – knew
Question 7: When I came to visit her last night, she ___________ a bath.
A. is having B. was having C. has had D. had had
Question 8: Tom ___________ before we arrive here.
A. has left B. had left C. will have left D. leaves
Question 9: He ___________ his Chinese course before he went to China to continue his business.
A. will finish B. has finished C. had finished D. will have finished
Question 10: Please send us a postcard as soon as you ___________ in London.
A. will arrive B. is going to arrive C. arrive D. arrived
Question 11: I ___________ you this book when I meet you tomorrow.
A. give B. will give C. is giving D. has given
Question 12: We ___________ for going home when it began to rain.
A. were preparing B. are preparing C. will be preparing D. have prepared
Question 13: John ___________ in the same house since he left school.
A. lived B. had lived C. was living D. has lived
Question 14: I had prepared dinner before I ___________ to work.
A. went B. was going C. had gone D. is going
Question 15: When she came into the hall, she ___________ her arms to the audience, smiled and bowed
deeply.
A. opened B. had opened C. was opening D. is opening
Question 16: I have never played badminton before. This is the first time I ___________ to play it.
A. try B. tried C. have tried D. am trying
Question 17: The car ___________ ready for him by the time he comes tomorrow.
A. will be B. will have been C. will being D. are going to be
Question 18: He greeted her. She really ___________ better than when he ___________ her last. Yes, she
___________.
A. looked – saw – had changed B. looked – saw – changed
C. looked – had seen – had changed D. had looked – had seen – had changed
Question 19: When I last saw him, he ___________ in London.
A. has lived B. is living C. was living D. has been living
Question 20: I sat down at the desk and ___________ why my father’s letter ___________ yet. I ___________
to ask him to send me some money at once.

A. wonder – hasn’t arrive – wrote B. wondered – hadn’t arrive – wrote
C. wondered – hasn’t arrived – wrote D. wondered – hadn’t arrived – had written

 

3.  Choose the best answer to complete each following sentence.

1.       The manager ______ the store before I arrived.

 A. closed                              B. had closed                       C. has closed                        D. was closed

2.       When we see Mr. Minh tomorrow, I ______ him of that.

A. will remind                      B. remind                              C. have reminded               D. reminded

3.       When I got home I found that water ______ down the kitchen walls.

A. ran                                     B. was running                    C. has run                             D. had been running

4.       After he ______ his English course, he went to England to continue his study.

A. has finish                         B. had finished                    C. was finished                    D. would finish

5.       While my father ______ a film on TV, my mother was cooking dinner.

A. watched                           B. was watching                 C. had watched                   D. watches

6.       I don't think he ______ in the thirty years I ______ him.

A. had changed/ have known                                         B. has changed/ have known

C. had changed/ had known                                           D. has changed/ knew

7.       When I came to visit her last night, she ______ a bath.

A. is having                           B. was having                      C. has had                            D. had had

8.       Tom ______ before we arrive there.

A. has left                             B. had left                             C. will have left   D. leaves

9.       He ______ his Chinese course before he went to China to continue his business.

A. will finish                         B. has finished                     C. had finished    D. will have finished

10.   Please send us a postcard as soon as you ______ in London.

A. will arrive                        B. is going to arrive            C. arrive                                D. arrived

11.   I ______ you this book when I meet you tomorrow.

A. give                                   B. will give                            C. is giving                            D. has given

12.   We ____ for going home when it began to rain.

A. were preparing              B. are preparing                 C. will be preparing           D. have prepared

13.   John ______ in the same house since he left school.

A. lived                                  B. had lived                          C. was living                         D. has lived

14.   I had prepared dinner before I ______ to work.

A. went                                 B. was going                        C. had gone                          D. is going

15.   When she came into the hall, she ______ her arms to the audience, smiled and bowed deeply.

A. opened                             B. had opened                    C. was opening                   D. is opening

16.   I have never played badminton before. This is the first time I ______ to play it.

A. try                                      B. tried                                  C. have tried                        D. am trying

17.   The car ______ ready for him by the time he comes tomorrow.

A. will be                               B. will have been                C. will being                         D. are going to be

18.   He greeted her. She really ______ better than when he ______ her last. Yes, she ______ .

A. looked/ saw/ had changed                                         B. looked/ saw/ changed

C. looked/ had seen/ had changed                               D. had looked/ had seen/ had changed

19.   When I last saw him, he ______ in London.

A. has lived                          B. is living                             C. was living                         D. has been living

20.   I sat down at the desk and ______ why my father's letter ______ yet. I ______ to ask him to send me some money at once.

A. wonder/ hasn’t arrive/ wrote                                    B. wondered/ hadn’t arrived/ wrote

C. wondered/ hasn’t arrived/ wrote                             D. wondered/ hadn’t arrived/ had written

Chọn đáp án đúng:

25. The school will be closed when the school year ___________.
A. will be ended    B. will end    C. ends     D. is ending
26. I _______________ breakfast before I went to work.
A. had prepared    B. prepared    C. was preparing    D. have prepared
27. My history teacher said that the World War II ___________ out in 1939.
A. broke      B. breaks     C. had broken      D. was breaking
28. He had left ____________________.
A. by the time I came         B. as soon as I had come
C. after I had come            D. until I had come
29. _________________ tomorrow, we will be playing tennis.
A. As soon as you will come          B. When you come
C. After you have come                 D. By the time you came
30. I will call you ___________________________.
A. as long as I have finished my work       B. after I had finished my work
C. since I have finished my work            D. as soon as I have finished my work
31. The older she got, ______________ she became.
A. the quietest    B. the more quiet    C. the quieter    D. more quieter
32. The colder the weather is, ______________ I like it.
A. the better   B. the worst      C. the most     D. the much more
33. Andy is ______________ of the two brothers in his family.
A. the taller    B. the tallest    C. taller   D. tallest
34. _________________ people are writing about this subject.
A. The number of    B. Much   C. A number of    D. A large amount of
35. There’s _________________ truth in what he said.
A. The number of    B. a great deal of    C. A number of    D. a little
36. I have _______________ things that need to be done before class.
A. a little    B. a few    C. any    D. a lot
37. He doesn’t look very intelligent, but you can’t judge a book by its ____________.
A. cover     B. title    C. headline    D. chapter
38. He took her help ____________ without saying thank you.
A. seriously    B. priority    C. for granted    D. into account
39. I was really down in the ______________ after my dog died.
A. griefs    B. sorrows    C. dumps    D. hopes
40. If you're expecting Dad to let you borrow his car, you're going to be ______________ disappointed.
A. strongly    B. bitterly    C. utterly    D. firmly
41. The number of vehicles used is the _____________ factors influencing pollution.
A. key    B. top    C. major    D. core
42. London is a vast, _____________ city, and the distances to the center from any of the outer suburbs involves a time-consuming journey, whether by public or by private transport.
A. roaring    B. bumper    C. sprawling    D. incessant
43. According to eye ___________, the robbery was carried out by two teenage boys.
A. witnesses    B. experiences    C. sightings   D. views
44. Everything we need is ______________. Let’s enjoy the vacation.
A. by hand    B. at hand      C. inside hand    D. on hand
45. He views his life as a spiritual _____________ towards a greater understanding of his faith.
A. trip    B. excursion    C. voyage    D. journey
46. I could detect subtle _____________ in fragrance as we strolled through the garden.
A. distinctions    B. variances    C. differences    D. discrimination
47. Readers of the magazine said they wanted more stories about ___________ people and fewer stories about the rich and famous.
A. original   B. casual    C. usual     D. ordinary

48. This kind of hot and spicy food is very __________ of the food in the south of the country.
A. basic    B. common    C. typical    D. popular
49. Whenever a camera was pointed at her, Marilyn would instantly ____________ herself into a radiant star.
A. transform    B. transfer   C. transmit    D. transit
50. A map showing the ____________ of the property will be sent to you.
A. position    B. situation   C. location   D. condition

Chon dap an dung : ( BT ve thi )

1. ________ a car when they were living in London?
a. Have they b. Did they have c. Were they having d. have they had
2. They ________ serving meals by the time we get to the restaurant.
a. will stop b. stopped c. are stopping d. will have stopped
3. Mark was listening to music while his sister_______ a book.
a. read. b. reads c. is reading d. was reading
4. You______ here for my party, won't you?
a. shall be b. won't be c. will be d. are going to be
5. Can I borrow your bike on Monday? I'm sorry, but_____ it.
a. I'll be using b. used c. use d. have used
6. We______ the concert. It was really good.
a. are enjoying b. enjoy c. did enjoy d. would enjoy
7. It was 10 p.m. Most of the shops_____ just______
a. have/closed b. had/closed c. has/closed d. was closing
8. There's no more apples. We ______ them all.
a. had eaten b. ate c. eat d. have eaten
9. She_______ music all day. Now she fells tired.
a. has been playing b. is playing c. played d. plays
10. After he________ the house, he wrote a letter.
a. cleans b. was cleaning c. had cleaned d. has cleaned
11. They_____ me about it last week.
a. was telling b. told c. had told d. would tell
12. I_______ here at the end of the month.
a. will leave b. would leave c. would have left d. is leaving
13. I hope everything______ fine.
a. is b. was c. would be d. will be
14. My grandfather______ many years ago.
a. had died b. has died c. died d. was dying
15. I______________ my son the money for that last week.
a. gave b. given c. have given d. was given
16. Yesterday I passed by Peter's house, but the front door was closed. He__out.
a. went b. must have gone c. has gone d. had had
17. Where ________ you at 9:00 last night, Mr. Green?
a. have been b. were c. will be d. are
18. I ________ the dishwasher on when heard the shot.
a. am turning b. turned c. was turning d. turned
19. Now I _______ for what I said about you. It wasn't true and I shouldn't
have said it
a. do apologize b. apologized c. was apologized d. apologizing
20. Tim was tired. He ______ hard all day.
a. has been studying b. studies c. studied d. had been studying

Chọn đáp án đúng:

1) I ... lots about the job so far

A. have learnt B. am learning

C. had learnt D. learnt

2) You ... here for my party, won't you?

A. shall be B. won't

C. will be D. are going to be

3) It was 10 p.m. Most of the shops... just ...

A. have-closed B. had-closed

C. has-closed D. was-closing

4) Either of these buses ... past the university

A. go B. have gone

C. gone D. goes

5) - I'm worried about the exam

- Oh, ... all right

A. you would be B. you are

C. you had been D. you'll be

6) There're no more apples. We...them all

A. had eaten B. ate

C. eat D. have eaten

IV. Each sentence has an underlined and corrected mistake. Choose the best
correction.(1,25 pts)
1. We didn’t wanted to go to the park.
A. We -> our B. wanted -> want C. go -> going
2. The shop closed ten minutes last.
A. closed -> was closed B. last -> ago C. minutes -> minute
3. We no live in a city.
A. no -> do not B.in -> on C. city -> cities
4. I can’t speak Chinese and neither can’t my brother.
A. I -> me B. speak -> spoke C. neither -> either
5. I want to buy a few chicken.
A. want -> to want B. a few -> a little C. chicken -> chickens
 

1. I closed the window ……………….. it was cold
A. and B. so C. because D. but
2. We have a lot of time. ………………., we will finish our project on time
A. As B. However C. So D. Therefore
3. The kids didn’t study,………………… they failed the test.
A. although B. however C. because D. so
4. ….…………………it rained heavily, we still went camping.
A. because B. although C. so D. but
5. Be quick! Take a taxi, …………………….. you’ll be late.
A. because B. but C. or D. so 4
6. It was a windy and rainy night…………………, I still decided to go out.
A. As B. However C. So D. Therefore
7. Peter wasn’t thirsty………………….. he drank five glasses of water.
A. as B. but C. or D. so
8. I enjoy playing badminton, volleyball ………………..table tennis.
A. and B. or C. but D. so
9. Phong tried his best last semester, …………………. he was not happy with his result. A.therefore B. moreover C. but D. and
10. She knew that it was dangerous;……………………..,she didn’t walk home by herself.
A.However B. Since C. But D. Therefore
11. I am sure she will do well if she ………………….to the University.
 A. will go B. went C. go D. goes
12. If I don’t find a job, I………………………..my studies.
A. will continue B. continue C. continued D. would continue
13. If we go on wasting water, there……………..a shortage of fresh water in a few decades.
A. was B. would be C. will be D. were
14. If you ………………….the lesson well, I will explain it again to you.
A. don’t understand B. understand C. didn’t understand D. understood
15. If Mrs Loan writes a shopping list, she…………………what to buy
. A. forgets B. forgot C. won’t forget D. forgot

16. Lan:………………………………. Nga: That's a good idea.
A.Why are you late for school? B. How are you today? C. How do we go to school? D. How about going somewhere for a drink?
17. Tuan: How about making posters on energy saving and hanging them around our school? You: ___________________
A. Oh, thank you. B. Yes, I’d love to. C. Yes, please. D. Good idea.
18.Peter: Let me congratulate you on your nomination, Amy. Amy: _____________________________________- .
A. That’s a good idea B. It’s nice of you to say so C. Well done D. Yes, I think so
19.- “Why don’t we celebrate Mother’s Day by going out to dinner?” - “ ____________________”
A.That’s right, I am. B. You are welcome. C. That’s a good idea. D. Thanks. 
20Tom: “What a nice blouse you are wearing! I really like it.” Mary: “ ___________________.”
A. You’re welcome B. Don’t mention it C. No, not at all D. It’s nice of you to say so

1. The farmers _____ in the field now.
A. were working B. have worked C. worked D. are working
2. The war _____ out three years ago.
A. broke B. had broken C. has broken D. was breaking
3. This morning while I ______ for the bus, the rain stopped.
A. waited B. have waited C. had waited D. was waiting
4. He ______ a cup of coffee every morning.
A. drinks B. drank C. is drinking D. has drunk
5. Up to the present, Nam_____ good work in his class.
A. does B. has done C. had done D. did
6. Phong ______ at the university so far.
A. had worked B. was working C. worked D. has worked
7. She _____ English before she came to England.
A. studied B. had studied C. would study D. studies
8. Mr. Harry ______ in the army from 1980 to 1985
A. had served B. has served C. is serving D. served
9. How____ since we____ school?
A. are you/ left B. will you be / left C. have you been/ left D. have you
been/ had left
10. Who ______ when I came ?
A. were you talking to B. are you talking to C. you are talking to D. you were
talking to
11. I _____ in the waiting room when I heard someone_____ me.
A. am sitting/ to call B. was sitting/ call C. am sitting/ called D. have sat / called
12. My son was sleeping when I ______ home.
A. went B. has gone C. had gone D. would go
13. Yesterday when I _____ at the station, the train _______ for 15 minutes.
A. arrived/ had left B. arrives/ has left C. arrived/ left D. had arrived/ left
14. When we _____ there, people ______ calmly.
A. got/ are waiting B. got/ were waiting C. got/ waited D. get/ wait
15. While I __________ in the street, I saw my old friend.
A. was walking B. am walking C. walk D. walked
16. “When did you come here?” “I ____ here since last Sunday.”
A. have been B. had been C. was D. am
17. People ____ English and French in Canada.
A. speak B. have spoken C. had spoken D. are speaking
18. While I was going to school yesterday, I ____ him.
A. meet B. met C. will meet D. am meeting
19. They were in a hurry because they thought that the class _____.
A. had already begun B. have already begun C. was begun D. will begin

20. We _____ in this house for ten years.
A. are living B. were living C. had lived D. have lived
13. ___________________ to rain before you woke up this morning?
A. Did it begin B. Had it begun C. Has it begun D. Began
21. Pasteur ___________________ in the 19 th century.
A. was living B. lived C. had lived D. has lived
22. While she ___________________ the room, she broke the vase.
A. was cleaning B. has cleaned C. had cleaned D. cleaned
23. By the time we got to the market, all the shops ___________________ .
A. have closed B. were closing C. had closed D. closed
24. John ___________________ his first piece of music when he was ten years old.
A. wrote B. was writing C. writes D. written
25. My daughter saw an elephant this morning, but she ___________________ one before.
A. had never seen B. has never seen C. never sees D. never had seen
26. While Mai ___________________ the meal, her brother ___________________ the
house.
A. cooked / clean B. cooked/was cleaning C. was cooking/cleaned D. was
cooking / was cleaning
27. The manager ___________________ a letter when I interrupted him.
A. has read B. reads C. was reading D. read
28. The film ___________________ when we arrived at the cinema.
A. has begun B. begun C. had begun D. begins
29. When I ___________________ home, my parents ___________________ to work.
A. got / went B. was getting / went C. got / had gone D. was getting / had
gone
30. Ann ___________________ very hard at the moment.
A. has studied B. studied C. is studying D. studies
31.The accident ___________________ when we were on the way to HN.
A. had occurred B. occurring C. occurred D. occur
32. They ________________ small cups of coffee after they __________________ dinner.
A. had drunk / finished B. drank / finished C. drank / had finished D. were drinking /
finished
33. The sun _______________ before I _________________ ready to go.
A. set / had been B. had set / was C. was setting / was D. was setting / had
been
34. In Hamlet, the opening scene ___________________ place at night.
A. was taking B. takes C. is taking D. has taken
35. You ____________ your new hat when I _______________ you yesterday.
A. wore / had met B. wore / was meeting C. were wearing / met D. were wearing / had
met
36. Andrew _______________ the test before so he _____________ it very easy.
A. did / had found B. was doing / found C. had done / found D. did / was finding

37. When he ____________ at the station, his train already _____________ .
A. arrived / left B. arrived / had left C. had arrived / left D. arrives /
leaves
38. The phone ___________________ suddenly while Jane was doing the housework.
A. rang B. was ringing C. had rung D. is ringing
39. Sarah has got an exam soon, so she ___________________ very hard at the moment.
A. works B. was working C. worked D. is working
40. Rosemary ___________________ to agree with us now.
A. is appearing B. appear C. appeared D. appears
41. Look! That man ___________________ your bike!
A. is stealing B. stealing C. steals D. stolen
42. Bettie usually ___________________ television in the evening.
A. has watched B. watching C. watches D. watch
43. It ______________ quite often in Britain during the winter.
A. is snowing B. snows C. snowed D. was snowing
44. I ___________________ Mai for five years. I wonder where she is now.
A. don’t see B. hadn’t seen C. haven’t seen D. didn’t see
45. Water ___________________ at 100 degrees Celsius.
A. is boiling B. boiling C. boils D. boil
46. Eric ___________________ a flat yet, so he’s still living with his parents.
A. didn’t find B. is finding C. hasn’t found D. found
47. We ___________________ any interesting films lately.
A. didn’t see B. haven’t seen C. saw D. have seen
48. She looked into her bag but the money ___________________ !
A. was going B. has gone C. had gone D. went
49. It was midnight. Outside it ________________ very hard.
A. rains B. is raining C. rained D. was raining
50. Up to now, the pollution problems ________________ yet.
A. haven’t solved B. are not solving C. hadn’t solved D. will not have solved

1. The farmers _____ in the field now.
A. were working B. have worked C. worked D. are working
2. The war _____ out three years ago.
A. broke B. had broken C. has broken D. was breaking
3. This morning while I ______ for the bus, the rain stopped.
A. waited B. have waited C. had waited D. was waiting
4. He ______ a cup of coffee every morning.
A. drinks B. drank C. is drinking D. has drunk
5. Up to the present, Nam_____ good work in his class.
A. does B. has done C. had done D. did
6. Phong ______ at the university so far.
A. had worked B. was working C. worked D. has worked
7. She _____ English before she came to England.
A. studied B. had studied C. would study D. studies
8. Mr. Harry ______ in the army from 1980 to 1985
A. had served B. has served C. is serving D. served
9. How____ since we____ school?
A. are you/ left B. will you be / left C. have you been/ left D. have you
been/ had left
10. Who ______ when I came ?
A. were you talking to B. are you talking to C. you are talking to D. you were
talking to
11. I _____ in the waiting room when I heard someone_____ me.
A. am sitting/ to call B. was sitting/ call C. am sitting/ called D. have sat / called
12. My son was sleeping when I ______ home.
A. went B. has gone C. had gone D. would go
13. Yesterday when I _____ at the station, the train _______ for 15 minutes.
A. arrived/ had left B. arrives/ has left C. arrived/ left D. had arrived/ left
14. When we _____ there, people ______ calmly.
A. got/ are waiting B. got/ were waiting C. got/ waited D. get/ wait
15. While I __________ in the street, I saw my old friend.
A. was walking B. am walking C. walk D. walked
16. “When did you come here?” “I ____ here since last Sunday.”
A. have been B. had been C. was D. am
17. People ____ English and French in Canada.
A. speak B. have spoken C. had spoken D. are speaking
18. While I was going to school yesterday, I ____ him.
A. meet B. met C. will meet D. am meeting
19. They were in a hurry because they thought that the class _____.
A. had already begun B. have already begun C. was begun D. will begin

20. We _____ in this house for ten years.
A. are living B. were living C. had lived D. have lived
13. ___________________ to rain before you woke up this morning?
A. Did it begin B. Had it begun C. Has it begun D. Began
21. Pasteur ___________________ in the 19 th century.
A. was living B. lived C. had lived D. has lived
22. While she ___________________ the room, she broke the vase.
A. was cleaning B. has cleaned C. had cleaned D. cleaned
23. By the time we got to the market, all the shops ___________________ .
A. have closed B. were closing C. had closed D. closed
24. John ___________________ his first piece of music when he was ten years old.
A. wrote B. was writing C. writes D. written
25. My daughter saw an elephant this morning, but she ___________________ one before.
A. had never seen B. has never seen C. never sees D. never had seen
26. While Mai ___________________ the meal, her brother ___________________ the
house.
A. cooked / clean B. cooked/was cleaning C. was cooking/cleaned D. was
cooking / was cleaning
27. The manager ___________________ a letter when I interrupted him.
A. has read B. reads C. was reading D. read
28. The film ___________________ when we arrived at the cinema.
A. has begun B. begun C. had begun D. begins
29. When I ___________________ home, my parents ___________________ to work.
A. got / went B. was getting / went C. got / had gone D. was getting / had
gone
30. Ann ___________________ very hard at the moment.
A. has studied B. studied C. is studying D. studies
31.The accident ___________________ when we were on the way to HN.
A. had occurred B. occurring C. occurred D. occur
32. They ________________ small cups of coffee after they __________________ dinner.
A. had drunk / finished B. drank / finished C. drank / had finished D. were drinking /
finished
33. The sun _______________ before I _________________ ready to go.
A. set / had been B. had set / was C. was setting / was D. was setting / had
been
34. In Hamlet, the opening scene ___________________ place at night.
A. was taking B. takes C. is taking D. has taken
35. You ____________ your new hat when I _______________ you yesterday.
A. wore / had met B. wore / was meeting C. were wearing / met D. were wearing / had
met
36. Andrew _______________ the test before so he _____________ it very easy.
A. did / had found B. was doing / found C. had done / found D. did / was finding

37. When he ____________ at the station, his train already _____________ .
A. arrived / left B. arrived / had left C. had arrived / left D. arrives /
leaves
38. The phone ___________________ suddenly while Jane was doing the housework.
A. rang B. was ringing C. had rung D. is ringing
39. Sarah has got an exam soon, so she ___________________ very hard at the moment.
A. works B. was working C. worked D. is working
40. Rosemary ___________________ to agree with us now.
A. is appearing B. appear C. appeared D. appears
41. Look! That man ___________________ your bike!
A. is stealing B. stealing C. steals D. stolen
42. Bettie usually ___________________ television in the evening.
A. has watched B. watching C. watches D. watch
43. It ______________ quite often in Britain during the winter.
A. is snowing B. snows C. snowed D. was snowing
44. I ___________________ Mai for five years. I wonder where she is now.
A. don’t see B. hadn’t seen C. haven’t seen D. didn’t see
45. Water ___________________ at 100 degrees Celsius.
A. is boiling B. boiling C. boils D. boil
46. Eric ___________________ a flat yet, so he’s still living with his parents.
A. didn’t find B. is finding C. hasn’t found D. found
47. We ___________________ any interesting films lately.
A. didn’t see B. haven’t seen C. saw D. have seen
48. She looked into her bag but the money ___________________ !
A. was going B. has gone C. had gone D. went
49. It was midnight. Outside it ________________ very hard.
A. rains B. is raining C. rained D. was raining
50. Up to now, the pollution problems ________________ yet.
A. haven’t solved B. are not solving C. hadn’t solved D. will not have solved

39. How long will it ______ you to get there?

         A. go                             B. need                         C. have                         D. take

40. Before he went to bed, Mr. Thomson______ the lights.

         A. closed                      B. turned on                 C. closed up                 D. switched off