2. 职称英语
  3. It is very kind of you to do the washing-up, but you_______it.A、mustn’t have don

It is very kind of you to do the washing-up, but you_______it.A、mustn’t have don

游客2023-10-16  16
问题 It is very kind of you to do the washing-up, but you_______it.
选项 A、mustn’t have done
B、shouldn’ t have done
C、oughtn’ t to have done
D、didn’t have to do
答案 D
解析 本题为情态动词题。mustn’t have done没有这种形式，对过去的否定推测要用couldn’t have done来表示。shouldn’t have done 表示“本不应该做而做了”;oughtn’t tohave done表示“本不应该做而做了”，含有责备的意思，不符合题意，故排除。句意:你真好!把这些碗碟都洗了，但你不必这样做的。本句不需要用到虚拟语气,故选D。
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