题目内容
【题目】Liu Jing volunteers in after-school study program ______ people in trouble.
A.helped
B.help
C.helping
D.to help
【答案】D
【解析】句意:刘静在课外学习活动小组当志愿者来帮助有困难的人。此处用动词不定式作目的状语。答案为D。
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A.but
B.or
C.and
D.so