Question

【题目】--- Why didn’t you try your best to get on the subway?

--- I tried to, but it started moving ______ I could get on it.

A. before B. after C. since

Answer 1

【答案】A

【解析】

试题分析：句意：你为什么不尽最大努力乘坐地铁？我尽力啦，但在我上车前它就开了。Before在……之前，after在……之后，since自从。根据句意可知选A。