题目内容

--Do you know _____ this time yesterday?

-- Sorry, I don’t know.

A. what she is doing   B. what was she doing C. what she was doing

C

【解析】宾语从句。宾语从句要用陈述语态。故排除B。由时间状语yesterday可判断为过去时态,故排除A。正确答案是C。

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