1. B. the most intelligent
2. C. was built
3. D. learning
4. B. housework
5. A. old enough
6. C. were having
7. A. have shown
8. C. were
9. B. did she
10. B. much

1. Mai is the most intelligent student in my class. (Option B)
2. Our house was built in 1986 by my grandfather. (Option C)
3. It’s no use learning a language if you don’t try to use it. (Option D)
4. I don't like doing the housework, especially clearing the windows. (Option B)
5. He will not be old enough to vote in this year’s election. (Option A)
6. They were having supper when the telephone rang. (Option C)
7. Doctors and scientists have shown the benefit of fish in the diet recently. (Option A)
8. If you were in my position, what would you do? (Option C)
9. That teacher taught you English last year, didn’t she? (Option A)
10. He doesn’t have much experience of working in an office. (Option B)

So the correct answers are: 9. B. the most intelligent

1. C. was built
2. D. learning
3. B. housework
4. A. old enough
5. C. were having
6. A. have shown
7. C. were
8. A. didn’t she
9. B. much

9. B. the most intelligent
10. C. was built
11. C. to learn
12. B. housework
13. A. old enough
14. C. were having
15. A. have shown
16. C. were
17. A. didn’t she
18. B. much

9. Mai is____________ student in my class.

A. most intelligent                                          B. the most intelligent            

C. more intelligent                                          D. the more intelligent

10. Our house____________ in 1986 by my grandfather.

A. built                                    B. was building           C. was built                 D. has been built

11. It’s no use ____________ a language if you don’t try to use it.

A. learned                   B. learn                        C. to learn                   D. learning

12. I don't like doing the____________, especially clearing the windows.

A. homework              B. housework              C. assignments            D. tasksA

13. He will not be____________ to vote in this year’s election.

. old enough             B. enough old             C. as old enough         D. enough old as

14. They____________ supper when the telephone rang.

A. had                         B. have had                 C. were having            D. have been having

15. Doctors and scientists ____________ the benefit offish in the diet recently.

A. have shown                        B. will show                C. are showing            D. have been showing

16. If you ____________ in my position, what would you do?

A. are                          B. will be                     C. were                        D. would be

17. That teacher taught you English last year,____________?

A. didn’t she               B. did she                    C. was she                   D. doesn’t she

18. He doesn’t have ____________ experience of working in an office.