一个简单的英语选择（讲解)
问题描述：
一个简单的英语选择（讲解)
- I hear Sam has gone to Qingdao for his holiday.
- How nice!Do you know when he (
A.left
B.was leaving
C.has left
D.had left
答
A
leave是一个瞬间动词 不能用进行时态或者完成时态