16. We didn’t catch the train ____________ we left late.

A. so　　 B. because　　 C. but　　 D. of

15. Bill Gates is ____________ in the world.

A. one of the richest people　　　　 B. one of the richest person

C. one of the richest peoples　　　 D. each of the richest people

14. I have nothing ____________ an apple.

A. besides　　 B. except　　 C. but　　 D. Both B and C

13. ____________he works hard ,China now produces enough rice to feed her people every year.

A. Because of　　 B. Because　　 C. With the help of　　 D. Thank to

12. When he moved to America in ____________, he was already in ____________.

A. the 1990s ,his sixty　　　　 B. 1990’s ,his sixty

C. the 1990s ,his sixties　　　 D. the 1990’s,sixty

11. How often ____________ your school sports meeting ____________？

A. does, hold　　 B. was, held　　 C . is, held　　 D. did, hold

10. I don’t remember where ____________ in that city when he was young.

A. did he work　　 B. he worked　　 C. he has worked　　 D. has he worked

9. Oh, this is really a big shop.　 Do you knew when it____________？

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

8. The doctors are discussing ____________ do with this kind of disease.

A. how they to　　　 B. what to　　 C. how can they　　 D. what can they

7. This machine is very easy to use.　 ____________ can learn to use it in a short time.

A. Someone　 　　B. Anyone　　 C. No one　　 D. Few people