73．We should 　　　　　　　(充分利用)our time to study.

72．　　　　　 (不止) one student was late yesterday.

71．You must talk with him 　　　　　　　(面对面地).

B 卷

(请将答案填在答题卷上)

35. She 　　　　such a serious heart trouble that it was difficult to regain her health.