1. If I go shopping, I ………some food.  a. buy  b. will buy c. would buy d. would have bought.

2. If I find it, I ………you.   a. will tell b. would tell c. had told d. told.

3. What would you do if you……………a million dollars?

a. would win b. win c. had won d. won.

4. They ‘d be hurt if I ……………….

a. don’t go b. didn’t go c. hadn’t gone d. wouldn’t go.

5. If we took the 6: 30 train, we…………too early.

a. would have arrived b. arrived c. will arrived d. would arrive.

6. You won’t pass the examination……………you study more.

a. as long as b. unless c. if d. whether.

7. If I were to leave my country , I ……………disappointed.

a. probably be b. would have been      c. will be d. would be.

8. If I were in your place, I ……….a trip to England.   a. will make  b. had made  c. made.  d. would make.

9. If I  ………….. you , I’d save some of your lottery winning.   a. be b. were c. am d. was

10. If I had enough money, I ……… abroad to improve my English.

a. will go b. should go c. would go d. should have go to

11. If it …….. convenient, let’s go out for a drink tonight.   a. be b. was c. were d. is

12. If you ……. time, please write to me.  a. have b. have had c. had d. has

13. If  you had the chance, ………… you go finishing?  a. did b. would c. may d. do

14. Trees won’t grow ……….. there is enough water.   a. if b. when c. unless d. as

1, am

2, go

3, will buy

4, rains

5, help

6, is

1 If i....................a lot of money now ,i.................anew car

a have/will buy b have/would buy

c had/will buy d had/would buy

2 if i................you,i............do that

a am/will b were/would c were/will d had been/would

3 if i were offered the job ,i think i....................it

a take b will take c would take d would take ken

4 i would be very surprised if he ..........................

a refuses b refused c had refused d would refuse

5 many people would be out of work if that factory.................down

a closes b had closed c closed d would close

6 if she sold her car ,she ....................much money

a gets b would get c will get d would have got

7 they would be disappointed if we..........................

a hadn't come b wouldn't come c don't come d didn't come

8 would john be angry if i....................his bicycle without asking?

a take b took c had taken d would take

9 she ..................terrible upset if i lost this ring

a will be b would be c were d had been

10 if someone....................in here witha gun, i would be very frightened

a would walk b would be c were d had been

11 what would happenif you ...................to work tomorrow ?

a don't go b didn'tgo c won't go wouldn 't go

12 we"II get wet if we....................out

a go b did go c went d had gone

13 if i go shopping ,i................some food

a buy b will buy c would buy d would have bought

14 if i find it,i....................you

a will tell b would tell c had told d told

15 what would you do if you...............a million dollars?

a would win b win c had won d won

16 they'd be hurt if i ......................

a don't go b didn't go c hadn't gone d wouldn't go

17 if we took 6:30 train, we.....................too early.

a would have arrvied b arrived c will arrvie d would arrive

18 you won't pass the examination........................you study more

a as long as b unless c if d whether

19 if i were to leave my country,i........................disappointed.

a probably b would have been c will be d would be

20 if i were in your place,i ..............a trip to england

a will make b had made c made d would make

CHỦ ĐỀ 5 : CONDITIONAL SENTENCES
Choose the best answer
1. If you pass your examination we _____________ a celebration.
A. have B. will have C. would have had D. would have
2. If I had time, I _____ to the beach with you this weekend.
A. will go B. will have gone C. would go D. would have gone
3. If she_________ late again, she'll lose her job.

A. came B. comes C. had come D. come
4. If I had enough money, _____ that house.
A. I am buy B. I could buy C. I can buy D. I will buy
5. If you had told me earlier, I _____________ it to you.
A. would give B. will give C. would have given D. gave
6. If it ____________, I will come to see you.
A. didn't rain B. doesn't rain C. don't rain D. not rain
7. I __________to work if I had a car.
A. drove B. will drive C. would drive D. would have driven
8. If he ___________to me, he wouldn't have failed in the exams.
A. had listened B. has listened C. listens D. listened
9. Had he come earlier, he __________her.
A. would meet B. would have met C. might meet D. will meet
10. If I were you, I _________ a new car.
A. buy B. will buy C. would buy D. bought

I. Multiple Choice

1. If I …………………a camera, I would have taken some pictures.

a. have b. had c. would have d. had had.

2. If I ……….a lot of money now, I …………..a new car.

a. have /will buy    b. have / would buy    c. had/ will buy    d. had/ would buy.

3. If I ……………you, I …………….do that

. a. am/ will b. were /would c. were/ will d. had been/ would.

4. If I were offered the job, I think I ………. it.

a. take b. will take c. would take d. would have taken.

5. I would be very surprised if he……………..

a. refuses b. refused c. had refused d. would refuse.

6. Many people would be out of work if that factory………..down.

a. closes b. had closed c. closed d. would close.

7. 6. If she sold her car, she ………… much money.

a. gets b. would get c. will get d. would have got.

8. They would be disappointed if we…………….

a. hadn’t come b. wouldn’t come c. don’t come d. didn’t come.

9. Would John be angry if I ……. ……his bicycle without asking?

a. take b. took c. had taken d. would take.

10. She ……….terrible upset if I lost this ring.

a. will be b. would be c. were d. had been.

11. If someone…………in here with a gun, I would be very frightened.

a. would walk b. walks c. had walked d. walked.

12. What would happen if you ……………..to work tomorrow?

a. don’t go b. didn’t go c. won’t go d. wouldn’t go.

13. We ‘ll get wet if we ………….out.

a. go b. did go c. went d. had gone.

14. If I go shopping, I ………some food.

a. buy b. will buy c. would buy d. would have bought.

15. If I find it, I ………you.

a. will tell b. would tell c. had told d. told

16. What would you do if you……………a million dollars?

a. would win b. win c. had won d. won.

17. They ‘d be hurt if I ……………….

a. don’t go b. didn’t go c. hadn’t gone d. wouldn’t go.

18. If we took the 6: 30 train, we…………too early.

a. would have arrived b. arrived c. will arrived d. would arrive.

19. If I had known you were in hospital, I …………to see you.

a. will go b. would go c. went d. would have gone.

20. If I …………., I would have said hello.

a. had seen b. see c. saw d. would see.

21. I…………..out if I hadn’t been so tired.

a. will go b. went c. would have gone d. would go.

I. Multiple Choice

1. If I …………………a camera, I would have taken some pictures.

a. have b. had c. would have d. had had.

2. If I ……….a lot of money now, I …………..a new car.

a. have /will buy    b. have / would buy    c. had/ will buy    d. had/ would buy.

3. If I ……………you, I …………….do that

. a. am/ will b. were /would c. were/ will d. had been/ would.

4. If I were offered the job, I think I ………. it.

a. take b. will take c. would take d. would have taken.

5. I would be very surprised if he……………..

a. refuses b. refused c. had refused d. would refuse.

6. Many people would be out of work if that factory………..down.

a. closes b. had closed c. closed d. would close.

7. 6. If she sold her car, she ………… much money.

a. gets b. would get c. will get d. would have got.

8. They would be disappointed if we…………….

a. hadn’t come b. wouldn’t come c. don’t come d. didn’t come.

9. Would John be angry if I ……. ……his bicycle without asking?

a. take b. took c. had taken d. would take.

10. She ……….terrible upset if I lost this ring.

a. will be b. would be c. were d. had been.

11. If someone…………in here with a gun, I would be very frightened.

a. would walk b. walks c. had walked d. walked.

12. What would happen if you ……………..to work tomorrow?

a. don’t go b. didn’t go c. won’t go d. wouldn’t go.

13. We ‘ll get wet if we ………….out.

a. go b. did go c. went d. had gone.

14. If I go shopping, I ………some food.

a. buy b. will buy c. would buy d. would have bought.

15. If I find it, I ………you. a. will tell b. would tell c. had told d. told

16. What would you do if you……………a million dollars?

a. would win b. win c. had won d. won.

17. They ‘d be hurt if I ……………….

a. don’t go b. didn’t go c. hadn’t gone d. wouldn’t go.

18. If we took the 6: 30 train, we…………too early.

a. would have arrived b. arrived c. will arrived d. would arrive.

19. If I had known you were in hospital, I …………to see you.

a. will go b. would go c. went d. would have gone.

20. If I …………., I would have said hello.

a. had seen b. see c. saw d. would see.

21. I…………..out if I hadn’t been so tired.

a. will go b. went c. would have gone d. would go.

I. Multiple Choice

1. If I …………………a camera, I would have taken some pictures.

a. have b. had c. would have d. had had.

2. If I ……….a lot of money now, I …………..a new car.

a. have /will buy    b. have / would buy    c. had/ will buy    d. had/ would buy.

3. If I ……………you, I …………….do that

. a. am/ will b. were /would c. were/ will d. had been/ would.

4. If I were offered the job, I think I ………. it.

a. take b. will take c. would take d. would have taken.

5. I would be very surprised if he……………..

a. refuses b. refused c. had refused d. would refuse.

6. Many people would be out of work if that factory………..down.

a. closes b. had closed c. closed d. would close.

7. 6. If she sold her car, she ………… much money.

a. gets b. would get c. will get d. would have got.

8. They would be disappointed if we…………….

a. hadn’t come b. wouldn’t come c. don’t come d. didn’t come.

9. Would John be angry if I ……. ……his bicycle without asking?

a. take b. took c. had taken d. would take.

10. She ……….terrible upset if I lost this ring.

a. will be b. would be c. were d. had been.

11. If someone…………in here with a gun, I would be very frightened.

a. would walk b. walks c. had walked d. walked.

12. What would happen if you ……………..to work tomorrow?

a. don’t go b. didn’t go c. won’t go d. wouldn’t go.

13. We ‘ll get wet if we ………….out.

a. go b. did go c. went d. had gone.

14. If I go shopping, I ………some food.

a. buy b. will buy c. would buy d. would have bought.

15. If I find it, I ………you. a. will tell b. would tell c. had told d. told

16. What would you do if you……………a million dollars?

a. would win b. win c. had won d. won.

17. They ‘d be hurt if I ……………….

a. don’t go b. didn’t go c. hadn’t gone d. wouldn’t go.

18. If we took the 6: 30 train, we…………too early.

a. would have arrived b. arrived c. will arrived d. would arrive.

19. If I had known you were in hospital, I …………to see you.

a. will go b. would go c. went d. would have gone.

20. If I …………., I would have said hello.

a. had seen b. see c. saw d. would see.

21. I…………..out if I hadn’t been so tired.

a. will go b. went c. would have gone d. would go.

Giúp mình giải các bài tập về câu điều kiện và kèm giải thích vs ạ

1/ If I (buy)……buy………….. a new hat, I'll give it to you (loại 1 )

2/ If today (be)……were……… Sunday, the pupils could go swimming. (loại 2)
3/ If he had been here, he (have…would have had….. a lot of fun. (loại 3)

4/ If my brother has enough money, he (buy) ………will buy……a bicycle.(loại 1)

5 / If he (have)………had had……. time, he would have read this novel.(loại 3)
6. If she hadn’t missed the bus, she (not be)……wouldn't have been….. late.(loại 3)
7. If Peter (study)……studied……….. hard, he could get good marks.(loại 2)
8. If my sister (not have)……didn't have…… a terrible headache, she wouldn’t be absent from her class.(loại 2)

9. If Windy (come)………had come…….., we wouldn’t have cancelled the meeting.(loại 3)

10. If he hadn’t been angry, he (say)……would have said………. something.(loại 3)
11. If I …...a lot of money now, I ... a new car.(loại 2)
a. have /will buy ​​b. have / would buy ​​c. had/ will buy ​d. had/ would buy.
12. If I ……………you, I …………….do that.(loại 2)
a. am/ will ​​​b. were /would ​​c. were/ will ​​d. had been/ would.
13. If I were offered the job, I think I ... it.(loại 2)
a. take ​​​​b. will take ​​​c. would take ​​d. would have taken.
14. I would be very surprised if he ...(loại 2)
a. refuses ​​​b. refused ​​​c. had refused ​​d. would refuse.
15. Many people would be out of work if that factory………….down.(loại 2)
a. closes ​​​b. had closed ​​​c. closed​​ d. would close.
16. If she sold her car, she …much money.(loại 2)
a. gets ​​​​b. would get ​​​c. will get ​​d. would have got.
17. They would be disappointed if we…………….(loại 2)
a. hadn’t come ​​b. wouldn’t come ​​c. don’t come ​​d. didn’t come.
18. Would John be angry if I ………… his bicycle without asking?(loại 2)
a. take ​​​​b. took ​​​c. had taken ​​d. would take.
19. She ...............terrible upset if I lost this ring.(loại 2)
a. will be ​​​b. would be ​​​c. were ​​d. had been.
20. If someone…………in here with a gun, I would be very frightened.(loại 2)
a. would walk ​​​b. walks ​​​c. had walked ​​d. walked.
21. What would happen if you ……….. to work tomorrow?(loại 2)
a. don’t go ​​​b. didn’t go ​​​c. won’t go ​​d. wouldn’t go.

22. We ‘ll get wet if we ………....out.(loại 1)
a. go ​​​​b. did go ​​​c. went ​​d. had gone.
23. If I go shopping, I ………… some food.(loại 1)
a. buy ​​​​b. will buy ​​​c. would buy ​​d. would have bought.
24. If I find it, I ….… you.(loại 1)
a. will tell ​​​b. would tell ​​​c. had told ​​d. told.
25. What would you do if you………..a million dollars?(loại 2)
a. would win ​​​b. win ​​​​c. had won ​​d. won.
26. They ‘d be hurt if I ……………….(loại 2)
a. don’t go ​​​b. didn’t go ​​​c. hadn’t gone ​​d. wouldn’t go.
27. If we took the 6: 30 train, we……….…too early.(loại 2)
a. would have arrived ​​b. arrived ​​​c. will arrived ​​d. would arrive.
28. If I had known you were in hospital, I ……..…to see you.(loại 3)
a. will go ​​​b. would go ​​​c. went ​​d. would have gone.
29. If I …., I would have said hello.(loại 3)
a. had seen ​​​b. see ​​​​c. saw ​​​d. would see.
30. I ………. out if I hadn’t been so tired.(loại 3)
a. will go ​​​b. went ​​​c. would have gone​ d. would go.
31. If I ………….a camera, I would have taken some pictures.(loại 3)
a. have ​​​b. had ​​​​c. would have ​​d. had had.

1. I don’t buy it because I don’t have enough money.

----> If I HAD ENOUGH MONEY, I WOULD BUY IT.

2. I don’t go out it because I don’t have time.

----> If I had time, I would go out.

3. He will go out. He will buy some bread.

----> If he buy some bread, he will go out.

4. I’m busy right now, so I can’t help you.

----> If I weren't busy now, I could help you.

5. He’s very thin, that’s why he feels the cold so much.

----> If her weren't very thin, he wouldn't feel the cold so much.

6. I don’t have breakfast, so I am hungry now.

----> If I had breakfast, I wouldn't br hungry now.

7. If John played for our football team, we would not lose the game.

----> Unless John played for out football, we would lose the game.

8. If I won a big prize in a lottery, I’d give up my job.

----> Unless I won a big prize in a lottery, I wouldn't give up my job.

9. If you don’t like this one, I’ll bring you another.

----> Unless you like this one, I'll bring you another.

10. I’ll only help you if you promise to try harder.

----> Unless you promise to try harder, I won't help you.

11.If she doesn’t work harder, she’ll lose her job

--> Unless she works harder, she'll lose her job.

II. Chọn đáp án đúng (A, B, C hoặc D).
A. have /will buy        B. have / would buy    C. had/ will buy          D. had/ would buy.

2. If I ________ you, I ________ do that.

A. am/ will                  B. were /would           C. were/ will               D. have been/ would.

3. If she sells her car, she ________ much money.

A. gets                         B. would get               C. will get                   D. have got.

4. If she sold her car, she ________ much money.

A. gets                         B. would get               C. will get                   D. have got.

5. They wish that they ________ in Hue now    A. stay        B. stayed         C. are staying   D. would stay

6. They wish that they _____ in Hue next year.    A. stay     B. stayed         C. are staying    D. would stay

7. She’ll get wet if we ________ out.   A. goes                     B. go   C. went                       D. had gone.

8. If I find it, I ________ you.     A. will tell              B. would tell               C. have told                  D. told.

9. If the wall weren't so high, he ________it up to take his ball down.
13. What would you do if you ________ a million dollars?

A. would win              B. win                         C. have won                D. won.

14. If I had enough money, I ________abroad to improve my English.

A. will go                    B. should go                C. would go                D. have gone

15. If Tom ________ up early, He will be late for the class

A. doesn’t get             B. won’t get                C. isn’t getting            D. can’t get

III. Chọn đáp án đúng (A, B, C hoặc D).

1. My father ______________ for this car-making factory since 1995.

A. worked                   B. was working           C. has worked                         D. have worked

2. I don’t have a computer. I wish I _______ one.  A. have   B. have had     C. had             D. will have

3. The Robinson _____ in Ha Noi in 2000.   A. arrived        B. arrive          C. has arrived               D. will arrive

4. Your father ______ in a bank, doesn’t he? A. is working B. works          C. has worked                        D. worked

5. Tom said that he ______ in Manchester City then.  A. has lived   B. is living    C. was living        D. lived

6. Nick _____ sick yesterday, so he didn’t go to school.   A. is        B. was    C. has been                D. will be

8. If I ______ enough money, I’ll buy a dictionary.  A. have            B. had   C. will have    D. would have

10. If I ___ her number, I would phone her.   A. know           B. had known  C. would know   D. knew

12. Don’t be noisy! I ______________ my homework

A. am doing                B. was doing               C. do                           D. did         

13. This old man is often busy with ______________ waste paper after school.

A. collecting               B. collected                 C. collects                   D. to collect

14. The city of London ____________ by the fire in the 16^th century.                   

A. is destroyed            B. was destroyed        C. destroyed                D. has been destroyed

15. When I came to see Mr. Brown last night, he ____________a newspaper in his own room.

A. read                        B. has read                  C. is reading               D. was reading

16. He was afraid of _____ the old lesson.  A. study             B. to study             C. studying          D. studied        

17. My brother usually _____ to work early.   A. go             B. goes            C. went            D. has gone

18. I ____________ anything for two days, so I am very hungry now.

            A. hasn’t eaten            B. haven’t eaten          C. didn’t eat                D. don’t eat

19. Mr. Nam _______________ a lot when he was twenty years old.

            A. was smoking          B. smoked                   C. has smoked            D. is smoking

21. We ______ the car at 9.00 yesterday   A. were cleaning   B. cleaned     C. have cleaned            D. clean

22.  They haven’t met each other since they __________ school.

            A. leave                       B. leaved                     C. left                          D. B & C are correct

23. She likes _____ cartoon in her free time.   A. watching              B. watches      C. watched           D. watch

24. When we __________ home yesterday, Lan was cooking dinner.

            A. come                      B. came                       C. was coming            D. has come

25. My pen pal, Maryam _____________ a letter to me since last year.

            A. didn’t write            B. doesn’t write          C. hasn’t written         D. wasn’t writing

            26. He _______ a kilo of beef now.A. want              B. to want       C. wants                      D. is wanting

27. I suggested __________ in groups.  A. work                   B. worked       C. should work    D. working

28. A: “I’m very tired” – B: “You ought to _____ inside. A. stay    B. staying        C. stayed D. be staying

II. Chọn đáp án đúng (A, B, C hoặc D).
1. If I ________ a lot of money now, I ________ a new car.

A. have /will buy        B. have / would buy    C. had/ will buy          D. had/ would buy.

2. If I ________ you, I ________ do that.

A. am/ will                  B. were /would           C. were/ will               D. have been/ would.

3. If she sells her car, she ________ much money.

A. gets                         B. would get               C. will get                   D. have got.

4. If she sold her car, she ________ much money.

A. gets                         B. would get               C. will get                   D. have got.

5. They wish that they ________ in Hue now    A. stay        B. stayed         C. are staying   D. would stay

6. They wish that they _____ in Hue next year.    A. stay     B. stayed         C. are staying    D. would stay

7. She’ll get wet if we ________ out.   A. goes                     B. go   C. went                       D. had gone.

8. If I find it, I ________ you.     A. will tell              B. would tell               C. have told                  D. told.

9. 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
10. If you press that button what ________?
            A. would happen          C. will happen   B. have happened                D. happen

11. If I ________in London now, I could visit British Museum.
            A. were                       B. have been               C. am                         D. would be
12. If you ________Mary by chance, please give her my phone number
            A. met                         B. should meet            C. could meet              D. will meet

13. What would you do if you ________ a million dollars?

A. would win              B. win                         C. have won                D. won.

14. If I had enough money, I ________abroad to improve my English.

A. will go                    B. should go                C. would go                D. have gone

15. If Tom ________ up early, He will be late for the class

A. doesn’t get             B. won’t get                C. isn’t getting            D. can’t get

III. Chọn đáp án đúng (A, B, C hoặc D).

1. My father ______________ for this car-making factory since 1995.

A. worked                   B. was working           C. has worked                         D. have worked

2. I don’t have a computer. I wish I _______ one.  A. have   B. have had     C. had             D. will have

3. The Robinson _____ in Ha Noi in 2000.   A. arrived        B. arrive          C. has arrived               D. will arrive

4. Your father ______ in a bank, doesn’t he? A. is working B. works          C. has worked                        D. worked

5. Tom said that he ______ in Manchester City then.  A. has lived   B. is living    C. was living        D. lived

6. Nick _____ sick yesterday, so he didn’t go to school.   A. is        B. was    C. has been                D. will be

8. If I ______ enough money, I’ll buy a dictionary.  A. have            B. had   C. will have    D. would have

10. If I ___ her number, I would phone her.   A. know           B. had known  C. would know   D. knew

12. Don’t be noisy! I ______________ my homework

A. am doing                B. was doing               C. do                           D. did         

13. This old man is often busy with ______________ waste paper after school.

A. collecting               B. collected                 C. collects                   D. to collect

14. The city of London ____________ by the fire in the 16^th century.                   

A. is destroyed            B. was destroyed        C. destroyed                D. has been destroyed

15. When I came to see Mr. Brown last night, he ____________a newspaper in his own room.

A. read                        B. has read                  C. is reading               D. was reading

16. He was afraid of _____ the old lesson.  A. study             B. to study             C. studying          D. studied        

17. My brother usually _____ to work early.   A. go             B. goes            C. went            D. has gone

18. I ____________ anything for two days, so I am very hungry now.

            A. hasn’t eaten            B. haven’t eaten          C. didn’t eat                D. don’t eat

19. Mr. Nam _______________ a lot when he was twenty years old.

            A. was smoking          B. smoked                   C. has smoked            D. is smoking

21. We ______ the car at 9.00 yesterday   A. were cleaning   B. cleaned     C. have cleaned            D. clean

22.  They haven’t met each other since they __________ school.

            A. leave                       B. leaved                     C. left                          D. B & C are correct

23. She likes _____ cartoon in her free time.   A. watching              B. watches      C. watched           D. watch

24. When we __________ home yesterday, Lan was cooking dinner.

            A. come                      B. came                       C. was coming            D. has come

25. My pen pal, Maryam _____________ a letter to me since last year.

            A. didn’t write            B. doesn’t write          C. hasn’t written         D. wasn’t writing

            26. He _______ a kilo of beef now.A. want              B. to want       C. wants                      D. is wanting

27. I suggested __________ in groups.  A. work                   B. worked       C. should work    D. working

28. A: “I’m very tired” – B: “You ought to _____ inside. A. stay    B. staying        C. stayed D. be staying

1. If I ……….a lot of money now, I …………..a new car.

a. have /will buy b. have / would buy

c. had/ will buy d. had/ would buy.

2. If I ……………you, I …………….do that.

a. am/ will b. were /would c. were/ will d. had been/ would.

3. if I were offered the job, I think I ………. it.

a. take b. will take c. would take d. would have taken.

4. I would be very surprised if he……………..

a. refuses b. refused c. had refused d. would refuse.

5. Many people would be out of work if that factory………..down.

a. closes b. had closed c. closed d. would close.

6. If she sold her car, she ………… much money.

a. gets b. would get c. will get d. would have got.

7. They would be disappointed if we…………….

a. hadn’t come b. wouldn’t come c. don’t come d. didn’t come.

8. Would John be angry if I ……. ……his bicycle without asking?

a. take b. took c. had taken d. would take.

9. She ……….terrible upset if I lost this ring.

a. will be b. would be would b c. were d. had been.

10. If someone…………in here with a gun, I would be very frightened.

a. would walk b. walks c. had walked d. walked.

11. What would happen if you ……………..to work tomorrow?

a. don’t go b. didn’t go c. won’t go d. wouldn’t go.

12. We ‘ll get wet if we ………….out.  a. go b. did go c. went d. had gone.

1.a

2.b

3.c

4.b

5.c

6.b

7.d

8.b

9.b

10.d

11. b

12.a

1A

2B

3C

4B

5C

6B

7D

8B

9B

10D

11B

12A

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