Question

【题目】He is a kind man. He often volunteer_____his friends.
A.helped
B.helping
C.to help
D.help

Answer 1

【答案】C
【解析】句意：他是一个善良的人。他常常自愿去帮助他的朋友。本题考查的是固定结构，volunteer to do sth自愿去做某事。根据句意，故答选C。