题目内容
Lei Feng is always ready to help others when they are in trouble and he never ______ their request.
A.turns up | B.turns over | C.turns in | D.turns down |
D
解析

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题目内容
Lei Feng is always ready to help others when they are in trouble and he never ______ their request.
A.turns up | B.turns over | C.turns in | D.turns down |
D
解析