I am a League Member. So I volunteer my time _____ others.

A. helping
B. to help
C. help
D. helped
B
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科目：初中英語(yǔ) 來(lái)源：月考題 題型：單選題

I am a League Member. So I volunteer my time _____ others.

[     ]

A. helping
B. to help
C. help
D. helped

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