Question

When they went into the park, they saw someone ______ Chinese  Kongfu.

A．plays

B．played

C．to play

D．playing

Answer 1

D

考查感官动词see的用法。句意“当他们走进公园时，他们看到有人在打中国功夫。”，“看到某人正在做......”用see sb. doing sth.，“看到某人做了某事”用see sb. do sth.。根据句意，用playing，故选D。