—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
答案
正确答案:A

从题干中has gone to 是“去了某地而未回”动作发生在过去,因此选A.

本题时态跟从句在一起考查,容易选择现在完成时态而出现错误。
