Question

【题目】By the lime he at the railway station, the train .
A.had arrived; had left
B.arrived; had left
C.arrived; left
D.had arrived; has left

Answer 1

【答案】B
【解析】由语境可知，到达火车站发生在火车离开之后，故排除A、D两项。by the time引导时间状语从句，从句用一般过去时，主句则用过去完成时，故选B。