Question

- 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

D．if

Answer 1

A

试题分析：句意:-你为什么没有尽你的最大努力上地铁？-我尽力了，但是在我上车之前它就开始动了。before 在……之前；after 在……之后；since 自从；if 如果。根据句意可知选A。