题目

I don’t think he could have done such a stupid thing last night, _____? A. did he             B. could he  C. do I               D. hasn’t he 答案：A 解析: I think + 从句的反意疑问句根据宾语从句确定。could在此表示揣测，应变为he did such a stupid thing last night来考虑。

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