He feels it his duty others.A. to helpB. to be comingC. helpD. helped

发布时间：2020-08-17 12:39:08

He feels it his duty      others.
A. to help
B. to be ing
C. help
D. helped

网友回答

(答案→)A. to help
B. to be ing
C. help
D. helped
解析：it作形式宾语，真的宾语是后面的不定式。
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