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
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
A
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。