It was very kind of you to do the washing?up,but you _______ it.a、mustn’t have done b、 wouldn’t have donec、 mightn’t have done d、 didn’t have to do为什么?

It was very kind of you to do the washing?up,but you _______ it.a、mustn’t have done b、 wouldn’t have donec、 mightn’t have done d、 didn’t have to do为什么?
It was very kind of you to do the washing?up,but you _______ it.
a、mustn’t have done
b、 wouldn’t have done
c、 mightn’t have done
d、 didn’t have to do
为什么?

It was very kind of you to do the washing?up,but you _______ it.a、mustn’t have done b、 wouldn’t have donec、 mightn’t have done d、 didn’t have to do为什么?
不可以选D,要选A
must not...have done.意为"本不必",即已经做了某事,而时实际上不必要
请看常见的“情态动词 + have + 过去分词”的用法：
一、“must + have + 过去分词”表示对过去发生的事情或状态进行推测,语气比较坚定,通常只用于肯定句.如：
It must have rained last night,for the ground is wet.
You must have been mad to speak to the servant.
二、“can / could + have + 过去分词”表示对过去某种情况的怀疑或不确定.can和could一般用于否定句和疑问句,could的语气较can弱.如：
I didn't see her at the meeting this morning; she can't / couldn't have spoken at the meeting.
He can't have finished the work so soon.
三、“may / might + have + 过去分词”表示对已发生的动作或存在的状态进行不肯定的推测,might的语气比may弱一点.这种结构主要用于肯定句和否定句,疑问句改用can或could.如：
They may not have known it beforehand.
You might have read about it in the papers.
四、“need + have + 过去分词”表示过去做了不必做或不需要做的事情,或过去做某事纯属多余.如：
Need they have done it last week?
I needn't have bought so much wine—only five people came.
五、“should / ought to + have + 过去分词”表示过去本该做某事但没做,其否定式表示过去不该做某事但做了,这种句式含有不满或责备之意,ought to的语气比should强一些.如：
You ought to / should have studied harder.你本应该更努力学习的.（但没有）
He oughtn't to / shouldn't have done that.他本来就不该做那件事.（可是做了）
六、“would ＋ have ＋ 过去分词”表示对过去的某种情况进行猜测,或本来要做某事却因某种原因未做成,通常用来说明某一情况,但不像用should或ought to那样含有责备之意.如：
I guess the poet would have been about twenty when she wrote her first poem.
Another worker wouldn't have acted like that.

对吧
我想原句要表达的是你没必要那么做

肯定是D
意思是你那个时候其实不是一定要洗的

选d
a 一定没有做

选A 吧
must not...have done. 意为"本不必",即已经做了某事,而时实际上不必要

选D
你能洗衣服很善良，但是你没有必要做的