20.(　　 ) This pair of trousers 　　　　　silk and cotton.

　　　　　 A. is made of　　　　　　　 B. are made of

C. is made from　　　　　　 D. are made from

19.(　　 ) When to go for a holiday 　　　　　yet.

　　　　　 A. has not been decided　　　 B. have not been decided

C. are not decided　　　　　 D. isn’t being decided

18.(　　 ) The old man always made us 　　　　　him 　　　　　in the fields.

　　　　　 A. help; working　　　　　　 B. to help; to work

C. help; to work　　　　　　 D. helping; work

17.(　　 ) Remember 　　　　　the post office and buy some stamps for me, won’t you?

　　　　　 A. to go　　　 B. going　　　 C. to going to　 D. to go to

16.(　　 ) There are so many kinds of radios in the shop. I can’t　　　　　　　　　　　 decide 　　　　　.

　　　　　 A. to buy what　　　　　　　 B. to buy which

C. what to buy　　　　　　　 D. which to buy

15.(　　 ) He feels like 　　　　　the Internet day and night. Tell him not to do it again.

　　　　　 A. search　　　 B. to search 　C. searching　 D. searches

14.(　　 ) The little boy is sleeping. You 　　　　　make noise here.

　　　　　 A. had better not to　　　　　 B. would better not

C. had better not　　　　　　 D. would better

13.(　　 ) He 　　　　　about three thousand words in the past three years.

　　　　　 A. has learned　 B. learned　　 C. was learning D. had learned

12.(　　 )-Can you tell me the difference 　　　　　American English and British English?

-It’s a pleasure.

　　　　　 A. between　　 B. among　　 C. during　　　 D. and

11.(　 　) Xiao Ming will go to Beijing for a visit. I 　　　　　him 　　　　　a good trip.

　　　　　 A. hope; to have B. hope; have　 C. wish; to have D. wish; have