问题
选择题
Do you know _________ at this time yesterday?[ ]
A. what she is doing
B. what is she doing
C. what she was doing
D. what was she doing
答案
答案：C
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Do you know _________ at this time yesterday?[ ]
A. what she is doing
B. what is she doing
C. what she was doing
D. what was she doing
答案：C