题目内容
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
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题目内容
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