Mr. Howard has committed himself ______helping children who are disabled and tho

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问题 Mr. Howard has committed himself ______helping children who are disabled and those in need of help.

选项 A、that
B、of
C、so
D、to

答案 D

解析语法：介词1．本题选项由介词和连词构成。2．commit意为“献身……、专注……”，与介词to连用，因此(D)为正确选项。被动语态形式的be commited to一ing也经常作为考题出现。

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