20. Why don't you bring _______ to his attention that you are too busy to go skating with him?

A. one　　　　　 B. that　　　　 C. it　　　 D. yourself

19. ______ , the car could not be started.

A. He lost the key　　　　 　　　 B. The key was lost

C. Having lost the key　　 　 　　 D. The key having been lost

18. As we know, ____ medical examination will help us find out health problems as early as possible.

A. normal　　　 B. general　　　　　 C. regular　　　 D. common

17. _______ either he or you going with me when the play _____　 here?

A. Is; is put on　　　　 B. Is; is put up　　　　 C. Are; is put on　 D. Are; put up

16. You should have told me there was no class today. I _____ all the way here through the heavy rain.

A. mustn't have run 　　 B. needn't have run　　 C. shouldn't have run 　 D. can't have run

15. He has entertained hopes of being admitted to a sight of the wonderful valley, ___________　 beauty he has heard much.

A. who　　　　 B. of whose　　　　 C. whose　　　 D. from which

14. Information has been put forward ______　 more and more students will be admitted into universities.

A. that　　　　　　 B. while　　　　　 C. when　　　　　 D. as

13. It's terrible. The bus ______　 break down just as we were going on our holiday.

A. could　　　　　　 B. would　　　　　 C. might　　　　　 D. should

12. Recently more and more farmers have _______ the government rather than nature for help.

A. appealed to　　　 B. centered on　　　 C. attended to　　　 D. lived up to