问题补充:
—Why didn’t you try your best to get on the bus?
—I tried to , but I could, it started moving.
A. before
B. when
C. until
D. after
答案:
(答案→)A. before
B. when
C. until
D. after
解析:考查连词。before 在什么之前,还没来得及,when 当什么时候,until 直到,after 在什么之后,句意:你为什么不努力上公交车呢?我努力了,但是我还没来得及上车,车就开始走了。所以选A。