C. is improved D. was improved

12. The thief is caught stealing and is now _________ in the police station.

A. watching over B. watching out for

C. being watched over D. to be watched out

13. Since the time humankind started gardening, we ______ to make our environment more beautiful.

A. try B. are trying C. will try D. have been trying

14. When _______ about the reason why he didn't hand in homework, the boy said his homework was torn by the little puppy.

A. questioning B. questioned C. to question D. questions

15. The couple had a big fight with each other and finally______.

A. broke in B. broke out C. broke down D. broke up

16. I really appreciate ______ by you.

A. treating B. treated C. being treated D. to treat

17. ----What are you worried about?

----Tom didn't respond to my e-mails. Something bad to him.

A. could happen B. must have happened

C. should have happened D. might happen

18. I wish to thank Professor Smith, without ______ help I would never have got this far.

A. whom B. who C. what D. whose

19. The new law has come into _____ , surely it will have _______ on industry of the country.

A. affect, an effect B. effect, affection

C. effect, an effect D. effect, affect

20. Little Johnny saw the bag, curious to know what it______.

A. collected B. contained C. loaded D. saved

21. A huge forest fire broke ______ last week in Sichuan province and caused great damage.

A. into B. up C. out D. down

22. The policeman ______ to be reading the newspaper. In fact, he was looking at the man near the window.

A. pretended B. began C. continued D. expected