问题补充:
The train for five minutes by the time we got there.
A. had left
B. left
C. was leaving
D. had been away
答案:
A. had left
B. left
C. was leaving
(答案→)D. had been away
解析:表示延续性的时间状语for five minutes, 不可与leave一起用, got的动词先于主句中的谓语的动作或状态,所以选had been away.