You don't _____need to clean the windows,for my sister did it earlierA.didn't need to clean B.needn't have cleanedC.must have cleaned D.cleaned

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Youdon''t_____needtocleanthewindows,formysisterdiditearlierA.didn''tneedtocleanB.needn''thavecleanedC.m

You don't _____need to clean the windows,for my sister did it earlierA.didn't need to clean B.needn't have cleanedC.must have cleaned D.cleaned
You don't _____need to clean the windows,for my sister did it earlier
A.didn't need to clean B.needn't have cleaned
C.must have cleaned D.cleaned

You don't _____need to clean the windows,for my sister did it earlierA.didn't need to clean B.needn't have cleanedC.must have cleaned D.cleaned
答案就是你所写的那样,选A
A.didn't need to clean
意思是
你不需要去打扫窗户,因为我的姐姐(妹妹)早就干了.
这里的need是实意动词,所以后面要加to