The train leaves at 6:00 p.m.So I have to be at the station 5:40 p.m.at the latest.A. unt

问题补充：

The train leaves at 6:00 p.m.So I have to be at the station 5:40 p.m.at the latest.

A. until

B. after

C. by

D. around

答案：

A. until

B. after

C. by

D. around

解析：从原题句意“火车在下午6点离开,”可知,A、 B两项不符合原句。D项是干扰项。后半句意思为“最晚在下午5:40 到达车站”。因此,只能选C。意思为“到5:40 为止”。