19. He realized she was crying ________ what he had sad.

A. because　　　 B. because of　　　　　 C. as　　　　　 D. since

18. －He asked Tom, “Have you finished your homework？”　 －He asked Tom 　　　.

A. if had he finished his homework.　　　 B. whether he had finished his homework.

C. if he had finished homework.　　　　　 D. if you had finished your homework.

17.“Not all of the dinosaurs were dangerous”. This sentence means　 　　 .

A. none of the dinosaurs were dangerous.　 　B. all of the dinosaurs were not dangerous.

C. few of the dinosaurs were dangerous.　　 D. no dinosaurs were dangerous

16. The president, together with his bodyguards, 　　to the nuclear station 　　　 there was an accident 20 minutes ago.

A. have come, which　　 B. came, in which　 　 　C. has come, where　 　 　D. came, in where

15. You made the same mistake for　 second time, dropping　 　“n” in the word “government”.

A. a, the　　 　　　 　B.a , a 　　　　 C. the, an　　　 　　　　　 　D. a, an

14. The reason 　　being late for the meeting was 　　 his little son fell ill this morning.

A. for, that　　 　 B. why, that　　　 　　 C. for, because　　 　　　 D. why, because

13. The leader of the factory told us that very little _______ was made of the waste material in the past.

　　 A. cost　　　　　　 B. value　　　　　　　 C. use　　　　　　　 D. matter

12. China Daily is ____ a newspaper, for it can also serve as a useful textbook for English study.

　　 A. more than　　　 B. more or less　　　　 C. less than　　　　　 D. more and more

11. Can you explain how it _______ that you missed the morning classes?

A. came across　　 B. came to　　　　　　 C. came up　　　　　 D. came about

10. Please tell me the way you thought of _______ the garden.

A. take care of　　　　　 B. to take care of 　　C. taking care of　　 D. to take care