By the time we arrived at the railway station the train . As a result we missed the trai

问题补充：

By the time we arrived at the railway station, the train . As a result, we missed the train.

A. left

B. is leaving

C. had left

D. leaves

答案：

A. left

B. is leaving

C. had left

D. leaves

解析：可联系答.案.网客服索取。