21. A. Then　　　　 B. However　　　 C. Thus　　　　 D. Therefore

19. Nobody noticed the thief　　 into the house because the lights happened to　　 .

　　 A. had slipped; be put up　　　　 　　　　　　　　 B. slip; give in

　　 C. slipping; be turned on　　　　 　　　　　　　　 D. slip; go out

18. On the top of the hill　　 　　　　　the old man once lived.

　　 A. a temple stands there; in which　 　　　　　　 B. a temple standing; on which

　　 C. does a temple stand; where　　 　　　　　　　　 D. stands a temple; where

17. -Were they late for the play?

-Not really. As soon as they　　 themselves in their seats in the theatre, the curtain 　　.

　　 A. settled; went up　　　　　　 　 B. settled; had gone up

　　 C. were settled; went up　　　　 D. were settling; had gone up

16. During the hurricane the night before, Tom lay in bed, 　　, 　　　the rushing winds.

　　 A. awake; was listening to　　　 B. awake; listening to

　　 C. waking up; was listening to　　 　　　　　　　　 D. woke up; listening to

15. The part that China　　 in the international affairs　　 in international society.

　　 A. played; is widely praised　　 B. played; is wide praised

　　 C. takes; widely praised　　　　 　 D. takes; wide praised

14. During the terrible storm last night, a　　　 tree fell over a 　　　car and caused 　　　.

　　 A. falling; slept; great damages　　 　　　　　　　 B. fallen; slept; a great deal of damage

　　 C. falling; sleeping; a great deal of damage D. falling; sleeping; great damages

13. -Which team is　　　 to win the game?

-In my opinion, it is　　　 for our team to win.

　　 A. probable; likely　 　　　　　　 B. possible; probable　

C.ikely; probable　 　　　　　　　 D. likely; possible

12. -It's many years since I saw you last, I　　　 you at all.

-I wouldn't have, either, if someone 　　　　you by the name.

　　 A. didn't recognize; hadn't called　　　 B. didn't recognize; didn't call

　　 C. haven't recognized; didn't call　　 　D. recognized; had called