Question

I often see the girls ________ in the room. They are very pleased.

A．dance

B．dances

C．dancing

D．to dance

Answer 1

A

此題重點考查see sb do sth和see sb doing sth的區別。都表示看到某人做某事。前者表示看到某人經常做某事或做過某事；后者表示看到某人正在做某事。根據語境可知我經常看到女生們在房間里跳舞，她們非常開心，故選A。