用关键词填写适当的形式 As I( )on the road,it began to rain.括号里的关键词是 walk

题目

用关键词填写适当的形式 As I( )on the road,it began to rain.括号里的关键词是 walk

答案

As I( was walking )on the road,it began to rain.正当我在路上走时,开始下雨
用过去进行时 was/ were + doing ( 现在分词）
不明白的再问哟,请及时采纳,多谢!