I often see the girls in the room. They are very pleased.
A. dance
B. dances
C. dancing
D. to dance
网友回答
(答案→)A. dance
B. dances
C. dancing
D. to dance
解析:此题重点考查see sb do sth和see sb doing sth的区别。都表示看到某人做某事。前者表示看到某人经常做某事或做过某事;后者表示看到某人正在做某事。根据语境可知我经常看到女生们在房间里跳舞,她们非常开心,故选A。