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
此题主要考查宾语从句,宾语从句要求用陈述语序,从yesterday可知用过去时,B. what was she doing是疑问句序,所以选C.
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