—I’ll call Bob and tell him the good news.
—You __________ do that. He was here just now and heard it.
A.couldn’t
B.mustn’t
C.shouldn’t
D.needn’t
答案:D
题目分析:考查情态动词。A. couldn’t不可能;B. mustn’t禁止;C. shouldn’t不应当;D. needn’t不必。句意:——我会打电话给Bob告诉他好消息。——你不必那么做。他刚才在这里已经听说过了。故D正确。