Question

【题目】Tim helps her sister ____________ the room.

A. cleans B. to clean C. cleaning

Answer 1

【答案】B

【解析】本句意思是Tim帮助他的妹妹打扫房间。帮助某人做某事的词组为：help sb to do sth因此本题应选动词不定式，故答案为：B。