13. You _________in such a hurry just now. Look, there is plenty of time left.
A. don't have to do it B. needn't have done it
C. wouldn't do it D. mustn't have done it
参考答案:B. needn't have done it
(needn't have done sth:指过去本没必要做但却做了，属虚拟用法，）
刚才，你本没必要这么忙，看，还剩很多时间呢。
如：
You needn't have told him that.
你本没必要告诉他。