Question

【题目】Sorry I'm late. The first underground started moving __________ I could get on it.
A.while
B.before
C.as soon as
D.after

Answer 1

【答案】B
【解析】句意：对不起我迟到了。在我上去前，第一层楼就开始移动。A. while当……的时候；B. before在……之前；C. as soon as一……就；D. after在……之后。根据题意，故选B。