问题
选择题
The policeman asked the man ____ at 9 o'clock last night. [ ]
A. what he was doing
B. what he is doing
C. what was he doing
答案
答案：A
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The policeman asked the man ____ at 9 o'clock last night. [ ]
A. what he was doing
B. what he is doing
C. what was he doing
答案：A