34.Not ______ beautiful, the building is ______ now.

　　　　 A.looking, being built　　　　　　　　 B.looked, being built

　　　　 C.being looked, building　 　 　D.looking, built

33.The conference has been held to discuss the effects of tourism ______ the wildlife in the area.

　　　　 A.in　 B.on C.at D.with

32.Wait till you are more ______. It's better to be sure than sorry.

　　　　 A.inspired　　　　 B.satisfied　　　　 C.calm　　　 D.certain

31.She will tell us why she feels so strongly that each of us has a role ______ in making the earth a better place to live.

　　　　 A.to have played　　　 B.to play　 C.to be played D.to be playing

30.He suddenly saw what looked like a snake in the darkness. For an instant his heart seemed to stop ______.

　　　　 A.to beat 　　 B.beating　　　 C.beaten 　　 D.being beaten

29.I can think of many cases ______ students obviously knew a lot of English words and expressions but couldn't write a good essay.

　　　　 A.why　　　 　 B.which　　　 　　　 C.as　　　 　　　　　 D.where

28.---I'm sorry I stepped outside for a smoke. I was very tired.

　　　　 ---There is no ______ for this while you are on duty.

　　　　 A.reason　 　 B.excuse　　 　 C.cause　　　 D.explanation

27.It ______ to me that I should pay a visit to my friend Jane next week.

　　　　 A.happened　　 B.supposed　　　 C.proved　 D.occurred

26.Public attention at the moment is ______ on the problem of how to create

　　　　 opportunities for the laid-off workers.

　　　　 A.focused　　　　 　 B.paid　 　 C.attracted　　　　 　　cerned

25.His conclusion, ______ on careful research, was acceptable.

　　　　 A.to base 　 B.to be based　　　 C.basing　 D.based