39. _______ you return those books to the library immediately , you will have to pay a fine.

　　 A. Until　　　 B. Unless　　　 C. If　　　 D .Provided

38.　 _______ the weather was fine, I opened all the windows.

　　 A. As　　　　 B. Because of　 C. For　　 　D. With

37.　 _______ speak louder than words.

　　 A. Activities　 B. Acts　　　 C. Behavior　 D. Actions

36.　 The skirt is quite all right　 _______ its color.

　　 A. except for　 B. except that　 C. except　 　D. except with

35.　 The moment hesitation _____ him the success.

A. spent　　　 B. caused　　　 C. lost　 　 　　D. cost

34.______ how to do the homework , I went to ask my teacher for help.

A. Not knowing　　 B. Not knowing　　 C. Knowing not　　 D. Not know

33. I had to shout to make myself _____ above the noise.

A. heard　 　　B. hearing　　 C. hear　 　 　　D. to hear

32. The students are told to have their homework _____ in before tomorrow afternoon.

A. hand　　　 B to hand　　　 C. handed　　 D. handing

31. When his wife returned, the husband noticed her hair _____ short.

A. cutting　　　 　B. to be cut　　 　　　 　C. being cut　　 D. cut

30.　 Mr. Smith , _____ of the _____ speech , started to read a novel.

A. tired ; bored　　 B. tiring ; bored　　 C. tired ;boring　 D. tiring ; boring