问题
The time he has devoted in the past years __________ the disabled is now consideredto be __________ great value __________ him.
A:to help; of; for
B:to helping; /; to
C:to help; in; of
D:to helping; of; to;
B:to helping; /; to
C:to help; in; of
D:to helping; of; to;
正确答案是：
同类题型
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