40. ______ everybody knows about it, I don't want to talk any more.　

　　　 A. For　　　　　 B. Even　　　　　 C. Since　　　　 D. However

39. He prefers ______ a bicycle rather than _____ on a crowded bus.

　　　 A. ride; ride　　 B. riding; ride　 C. ride; to ride D. to fide; ride

38. How foolish it was _______ you to believe ______ him!

　　　 A. for; on　　　 B. of; in　　　　 C./; /　　　　　 D. for; with

37. _______ you've got the chance, you'd better make full use of it.

　　　 A. Since　　　 B. when　　　　　　 C. For　　　　　 D. If

36. --Are these desks enough for you?　 --No,_____ are needed.

　　　 A. three more　 B. more three 　　　C. three another D. other three

35. It's too late to go to the concert,____ ,it's raining outside.

　　　 A. except　　　 B. but　　　　　　　 C. however　　　 D. besides

34. Scientists will have to ___　 new methods of increasing the world's food supply.

　　　 A. come up　　 B. come up with　　 C. come over　　 D. come across

33. He promised ____ he would visit me and ____ he would try his best to help me.

　　　 A./; /　　　　 B. that; /　　　　　 C./; that　　　　 D. if; that

32. Can you tell me _______ 100 years from now on?

　　　 A. what the world will look　　　　 B. what the world will look like

　　　 C. bow the world will be like　　　 D. how will the world look

31. --Is there any difference _______ our views?

　　　 --Yes. I have a different view __ yours on this matter.

　　　 A. from; from　 B. between; between C. from; between D. between; from