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

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

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

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

不是,选B。用could提问