Question

【题目】 we were walking along the river, we heard a cry for help.

A.While B.Until C.After D.Before

Answer 1

【答案】A

【解析】

试题分析：句意：当我们沿着河边走时，我们听到了求助声。A.while正当……时候;B.Until直到……才；C.After在……之后；D.Before在……之前。故选A。