While Helen _____ along the river after

问题选择题

While Helen _____ along the river after supper, she ____ a wallet lying on the roadside.

A. was walking; was finding B. walked; found

B. walked; was finding D. was walking; found

答案

答案：D

题目分析：While引导的从句表示两个动作同时进行或紧接着发生，find为短暂性动作，通常不用进行时，句意为：晚饭后海伦沿着河边散步的时候，发现路边有个钱包。故选D。