题目内容
14．It's very kind of you to do the washing-up，but you _____it．（ ）| A． | didn't need to do | B． | don't need to do | ||
| C． | needn't have done | D． | needn't do |
分析 句意：你真好，把这些东西都洗了，但是你原本没有必要洗．
解答 答案C．根据句意，可以，衣服已经洗了，但是你没有必要洗，故用needn't have done 表示过去没有必要做某事而做了．故选C．
点评 本题考查虚拟语气，要结合具体的语境选择出正确的选项．
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