You in person; a telephone would have been enough.
A. couldn’t have e
B. needn’t have e
C. shouldn’t have e
D. mustn’t have e
网友回答
A. couldn’t have e
(答案→)B. needn’t have e
C. shouldn’t have e
D. mustn’t have e
解析：考查情态动词的用法。题意：你本来不必亲自来的，打个电话就行。needn’t have done sth.表示“做了没有必要做的事”。选择B项。