2. His illness _________ the family’s trouble.

A. add up　　 B. add up to　　 C. add to　　 D. are added to

1．I have to __________all the books before the exams.

　A. go through　 B. go over　　 C. go up　　　 D. go out

10. I have ________________everything that the teacher said.

9. ___________3, 4 and 5 and you'll get 12.

8. 　I didn't do it ________________. It was an accident.

7.　 Although I am a new comer, I __________________my classmates very well.

6.　 She often ______________ headaches.

5.　 She _______________ your safety, you should come back earlier next time.

4. 　They are going to ____________ the singing.

3.　　　 The country has _______________ too many wars.