Question

---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

Answer 1

C

试题分析：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。