Seeing their teacher _______ into the classroom, they stopped _______ at once.A．

题型：不详难度：来源：

Seeing their teacher _______ into the classroom, they stopped _______ at once.

A．walk; telling	B．entering; to speak
C．enter; to tell	D．walking; talking

答案

D

解析

句意：看见他们的老师走进教室，他们立即停了下来。现在分词作宾语补足语表示正在进行的伴随性动作，和被修饰词是主谓关系。Stop后接动名词表示停止正在做的动作，接不定式表示停下来去做另一件事情，结合语境可知选D。