题目

— Why didn’t you try your best to get on the underground? — I tried to, but it started moving ______ I could get on it.A. before B. while C. as soon as D. after 答案：【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；while当……时候，as...as...一……就……；after在……后。根据句意可知选A。Could you please_______her with her English?A. to help B. helping C. help D. helped