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

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

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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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