21. No matter how frequently _____, I always remember never to stop improving myself.

　　　 A. praising　　　　　　 B. praised　　　　　　 　 C. to be praised　　 　　 D. being praised

20. We were too tired to walk _____ farther towards the evening so we had to find a hotel to stay in.　

　　　 A. any　　　　　　　　　 B. much　　　　　　　 　 C. even　　　　　　　　 　　 D. still　 崇明

19. Is this the best way you thought of _____ people getting into the dangerous areas?

　 　 A. to stop　 　　　　　 B. stopping　 　　　　　　 C. stopped　 　　　　　　　 D. to have stopped

18. How can you expect to be a good speaker _____ you never dare to speak in public?

　 A. in case　 　　　　　 B. even if　 　　　　 　　C. unless　 　　　　　　　　　 D. if　 宝山

17. In the survey they listed twelve kinds of food ___would affect the work of the brain.

A. that were believed　　　　　　 　 B. which the experts believed

C. the experts believed that　　　 　　　 D. the experts believed

16. Yesterday evening the board had a discussion regarding ______ they should set up more scholarships to meet the increasing demands.

　　　 A. what　　　　 B. whether　　　 　C. that　　　 　　　　　 D. who 　重点校

15. ----I serve him three meals a day and almost everything for him, but he still fails me.

　 ---- I’m sorry to say that’s ____ you are wrong. To give him whatever he wants will only spoil him.

A. where　　　　　　 B. what　　　　　　　　　　　 C. why　　　　　　　　 　 D. how

14. It was two months ______ the young man mastered the skill of running the machine introduced from Germany.

A. since　　　　　　　　 B. when　　　　　　　　　　　 C. that　　　　　　　　　　　　 D. before

13. To have a family reunion dinner at a restaurant, you need to reserve the restaurant and select dishes on the menu months before it, ______?

A. don’t you　　　　　　　　 B. didn’t you C. mustn’t you　　　　　　 D. needn’t you

12. Facing the economic depression, every possible means ______ this year to save the company from going bankrupt.

A. has been tried 　　　 B. has tried　　　　　 C. have been tried　　 D. have tried 六校