问题
选择题
When they went into the park, they saw someone ______ Chinese Kongfu.
A.plays
B.played
C.to play
D.playing
答案
答案: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。