On my way home,i saw a boy ( )on the roadside.A.cries B.cried C.crying D.to cry

问题描述:

On my way home,i saw a boy ( )on the roadside.A.cries B.cried C.crying D.to cry
单项填空.麻烦讲下过去式中这类题目的做法,备受此类题目困扰,

C
see sb doing sth看见某人正在做某事