--IhearSamhasgonetoQingdaoforaholiday.---Oh,hownice!Doy...

问题详情：

--I hear Sam has gone to Qingdao for a holiday.

---Oh, how nice! Do you know when he_______?

A. was leaving    B. has left                C. left               D. leaves

【回答】

C

知识点：动词时态

题型：选择题