问题
选择题
I don't think she could have done such a stupid thing yesterday, _____?
A．do I
B．could she
C．did she
D．has she
答案
答案：C
考查反意疑问句。根据yesterday可知，could have done是对过去动作的推测，故用过去时；情态动词表示推测，反意疑问句不用情态动词，故答案选C。
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