题目内容
( ) 5. So many people were running out of the station at that time. I wondered what .
A. is happened B. was happened
C. is happening D. had happened
5. D
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题目内容
( ) 5. So many people were running out of the station at that time. I wondered what .
A. is happened B. was happened
C. is happening D. had happened
5. D