He has all of the money and no one would like to help him.A. used toB. used asC. used upD

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A. used to
B. used as
(答案→)C. used up
D. used for
解析：used to 过去常常做某事；used as用作；used up 用完，耗尽；used for用于。句意：他花完了他所有的钱，并且没有人愿意帮助他。结合语境可知选C。