题目内容
----I hear Sam has gone to Qingdao for his holiday.
----Oh, how nice! Do you know when he ?
A. left B. was leaving C. has left D. had left
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题目内容
----I hear Sam has gone to Qingdao for his holiday.
----Oh, how nice! Do you know when he ?
A. left B. was leaving C. has left D. had left