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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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。