20. — You’ve given us a wonderful Chinese dinner, Mrs. Wang.

— ________.

A. Oh, I’m afraid I didn’t cook very well　　　 　　B. I’m glad you enjoyed it

C. Come again when you are free　　　　　　 　　D. It’s not necessary for you to say so

19. ________to take this adventure course will certainly learn a lot of useful skills.

A. Brave enough students　　　　　　　　　　　　 　　　　　B. Enough brave students

C. Students brave enough　　　　　　　　　　　　 　　　　　D. Students enough brave

18. It is not rare in________that people in________fifties are going to university for further education.

　 　A. 90s; the　　　　　　　　　　 B. the 90s; /　　　 　　　　 C. 90s; their　　　　　　　　 D. the 90s; their　

17. ________your composition carefully, some spelling mistakes can be avoided. 　

A. Having checked　 　B. Check　　　 　　　　　　C. If you check　　　 　　D. To check　

16. When I got back home I saw a message pinned to the door, ________ “Sorry to miss you; will call later.”

A. read　　　　　 　　　　B. reading　　　 　　　　　C. to read　　　 　　　　D. reads　

15. — It was the drug, not the disease, that killed the boy.

— He _________ be still alive today if he ________ that drug.

A. would; not take　 　　B. may; hadn’t taken　 　　C. can ; didn’t take 　D. might; hadn’t taken

14. It sounds like a lot of fun. It is rather risky, ________.

　 A. but　　　　　　　 B. although　　　　　　 C. though　　　　　 D. therefore

13. Not a single song ________　at yesterday’s party.

A. she sang　　　　　　　　 　B. sang she　　　　 　　　　C. did she sing　　　　　　 D. she did sing

12. If your knowledge can be in some way ________ with my experience, we are sure to succeed.

A. joined　　　 　　 　　B. met　　　　　 　　　C. united　　　 　　D. combined

11. Tanzania is a country ________ building socialism in the long term.

　 A. committed to　　　 B. commiting to　　　　 C. commited to　　　 D. committing to