41. The nurse doesn’t feel well today, ______ she still works very hard.

　 A. but　　　 B. and　　　 C. or　　　 D. when

40. Tom has been in the factory ______ he left school.

　 A. when　　　 B. since　　 C. as soon as　　 D. whether

39. He had ______ much work to do that he couldn’t go out.

　 A. so　　 B. much　　　　 C. as　　　 D. or

38. The two friends were ______ pleased to see each other that forgot everything.

　 A. so　　　　 B. too　　　　 C. very　　　 D. much

37. There was ______ smoke that they couldn’t see anything clearly.

　 A. too　　　 B. too many　　 C. so much　 D. so many

36. Woke hard, _______ you will fall behind.

　 A. or　　　 　　　 B. and　　　 C. so　　　 D. so but

35. Take more exercise, _______ you’ll be healthier.

　 A. and　　 B. or　　　 　 C. but

34.I will wait ______ he come back, because I have something to tell him.

　 A. until　　 　　 B. before　　　 C. when

33. –You watched the fashion show last week, didn’t you?

　 - Yes, ______ I missed the beginning.

　 A. or　　　 B. so　　　 C. and　　 D. but

32. ______ he said he wasn’t hungry at all, he ate a big breakfast.

　 A. Unless　　　 B. Because　 C. If　　　 D. Though