The little boy still needs the 20 dollars to do with some things .
A. remaining；remained to be settled
B. remaining；remaining to be settled
C. remained；remained to settle
D. remained；remaining to settle
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A. remaining；remained to be settled
(答案→)B. remaining；remaining to be settled
C. remained；remained to settle
D. remained；remaining to settle
解析：第一个remaining用作形容词,作“剩下的”解;第二个remaining to be settled 是-ing形式短语作定语。