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Thetimehehasdevotedinthepast10years

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問題詳情:

Thetimehehasdevotedinthepast10years

The time he has devoted in the past 10 years____the disabled is now considered_____ of great value.

      A. to helping; being      B. to helping; to be    C. to help; to be          D. helping; being

【回答】

B

知識點:介詞

題型:選擇題