问题
选择题
---How long has the train been away?
---Sorry. I don’t know. By the time I got here, the train ________.
A．has left
B．was leaving
C．has been away
D．had left
答案
答案：C
题目分析：句意：火车离开多久了？很抱歉。我不知道。我到这儿的时候，火车已经离开了。由By the time I got here可知该用过去完成时，所以选C。