问题补充:
By the time I the railway station, the train .
A. got to, left
B. reached, had left
C. arrived, had left
D. came, left
答案:
A. got to, left
(答案→)B. reached, had left
C. arrived, had left
D. came, left
解析:考查时态。我到达车站为过去火车离开应是“过去的过去”所以要用过去完成时。句意:当我到达车站的时候火车已经离开了。