Question

I saw them ___football on the playground when I passed by.

A．playing

B．were playing

C．played

D．to play

Answer 1

A

试题分析：句意：我经过的时候看见他们正在操场上踢足球。See sb. doing sth.看见某人正在做某事，后接动词ing形式，表示动作正在发生，故选A。