32. ______ you eat the correct foods ______ be able to kiip fit and stay healthy.

　 A. Only if; you will　　　　　 B. unless; you will

　 C. Only if; will you　　　　　 D. unless; will you

31. By the time he realizes he ______ into a trap, it’ll be too late for him to do anything about it.

　 A. walks　　 B. walked　　　 C. has walked　　 D. had walked

30. ------Is there anything wrong , Bob? You look sad.

　 ------ Oh, nothing much. In fact, I ______ of my friends back home.

　 A. have just thought　　　　　 B.was just thinking

　 C. would just think　　　　　 D. will just be thinking

29. The country has already sent up three unmanned spacecraft, the most recent ______ at the end of last March..

　 A.has been launched　　　　　 B.having been launched

　 C. being launched　　　　　　 D. to be launched

28. ------Where did you get to know her?

　 ------ It was on the farm ______ we worked.

　 A. there　　　 B. that　　　 C. where　　 D.there

27. ______ I really don’t like art, I find his work impressive.

　 A. As　　　　 B. Since　　　 C. If　　　　 D. while

26.______ worries me the way he keeps changing his mind.

　 A. This　　　　 B. That　　　 C. What　　　 D. It

25. ------Have you been wasting time on computer games again?

　 ------______. I’ve been studying a lot and I need a break.

　 A. No way　　　 B.Not really　　　 C.I don’t agree　　 D.I couldn’t agree more

24. The hunter calmly picked up his gun,took the aim and fired, ______ the beast.

　　 A.bringing down B.pulling down　 C.falling dowing　 D.putting down

23.Hearing that most of the members voted against her, she ______ a smiile.

　　 A.wore　　　　 B. managed　　 C.performed　　trolled