题目内容

I want to know ________yesterday.

A. when did he come back B. when does he come back

C. when he came back D. when he comes back

C 【解析】句意:我想知道他昨天什么时候回来的。考查宾语从句。本句是宾语从句,从句需用陈述语序,可排除AB两项。根据yesterday,可知是一般过去时态,故选C。
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