—Youknowthatyouweredrivingat100kilometresperhour,don'ty...
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问题详情:
—You know that you were driving at 100 kilometres per hour, don't you?
—No, officer, I ________have car can't do more than 80.
A.mustn't B.shouldn't
C.may not D.couldn't
【回答】
D [couldn't have done是对过去的否定推测。]
知识点:情态动词
题型:选择题