16. The police caught the thief ______.

　A. by his arm　　 B. by the arm

　C. with his arm　 D. with the arm

15. Students learning to talk doesn’t learn by ______ all the time.

　A. collecting　 　　　　　 B. being corrected

　C. having been collected　 D. being correcting

14. Boxing may cause damage ______ the brain.

　A. for　　　 B. on　　　 C. to　　　 D. with

13. She finished the exercises neatly and landed steadily. ______, she gave a very good 　performance.

　A. At all　 B. Of all 　 C. In all　 D. Above all

12. But for his friend’s help, he ______ such good progress.

　A. shouldn’t have made　　　 B. couldn’t have made

　C. couldn’t make　　　　　　　 D. could haven’t made

11. - Why isn’t Bill here today?

　　　- ________.

　A. He may be ill　　　　　　　 B. It looks as if he was ill

　C. I guess he was ill　　　　　　 D. He can have been ill

10. It was so cold that night that they kept the fire ______ all the time.

　A. to burn　　B. burn　C. burning　D. burned

9. After two periods, all the students do eye exercises ______ the music.

　A. to　　　 B. with　　　 C. by　　　 D. in

8. The building ______ now used to be famous.

　A. torn down　 　B. being torn down

　　C. to be torn down 　　　 D. been tearing down

7. ______ was at midnight ______ he came back home.

　A. It; that 　　　 B. It; when　 C. That; until　　　 D. Not until; when