15. Young as he is, David has gained ____ rich experience in ____ society.

A. the; the　　 B. a; 不填　　 C. 不填；不填　　 D. 不填；the

14. --When did it begin to snow?

　　 --It started ____ the night.

A. during　　 B. by　　 C. from　　 D. at

13. We had a really bad time about six months ago but now things are ____.

A. looking up　　 B. coming up　　 C. making up　　 D. turning up

12. Now that we ____ all the money, it's no use turning on me and saying it's all my fault.

A. had lost　　 B. lost　　 C. have lost　　 D. lose

11. Thank you for sending us ____ fresh vegetables of many kinds. You have done us ____ a great service.

A. 不填；a　　 B. the；a　　 C. 不填；不填　　 D. the；不填

10. --Your book, Tommy?

　　 --No, Mom, it's my friend's.

　　 --Remember to return it to ____ name is on it.

A. what　　 B. which　　 C. whose　　 D. whosever

9. I ____ to go for a walk, but someone called and I couldn't get away.

A. was planning　　 B. planned　　 C. had planned　　 D. would plan

8. I'd like to live somewhere ____ the sun shines all year long.

A. which　　 B. that　　 C. where　　 D. in which

7. --The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?

　 --____ my students have a try?

A. Shall　　 B. Must　　 C. Will　　 D. May

6. --What should I wear to attend his wedding party?

　 --Dress ____ you like.

A. what　　 B. however　　 C. whatever　　 D. how