题目内容：

I don't think he could have done such a stupid thing last night,-___?Ado I Bcould he Cdid he
Dhas he
是不是选c

优质解答

C did he 当主句主语为第一人称时,要看从句.否定前移.所以这句的否定意义在后面的宾语从句中,从句为否定句,后用肯定.情态动词表推测时,不用情态动词来完成问句,有过去时间用过去时.could have done 是过去的猜测,所以反义疑问句也要用过去时态,所以这句要did he.