35. The bell________the end of the period rang, _________our heated discussion.

　 A. indicating; interrupting　　 　　　　　　　B. indicated; interrupting

C. indicating; interrupted　　　　　　　　　 D. indicated; interrupted

34. The United States is _________ the south of Canada and ________the east of Japan.

　　 A. to; in　　　　 B. on; to　　　　　 C. in; beside　　　　 D. at; on

33. The person_________ at the meeting is famous _________an actor.

　　 A. referred; for　　 B. referred to; as　　 C. referred to; for　　 D. referring; as

32. You have no idea how she finished the relay race_________her foot wounded so much.

　　 A. for　　　　　 B. when　　　　　 C. with　　　　　　 D. while

31. -----May I open the window to let in some fresh air ?　　　 ------_____________.

　　 A. Come on !　　 B. Take care !　　 C. Go ahead !　　　 D. Hold on !