Stone seldom, _______, refuses to help others when they turn to him, for he is o

题干

Stone seldom, _______, refuses to help others when they turn to him, for he is only too ready to do so.

A．if never

B．if not

C．if ever

D．if any

上一题下一题 0.64难度单项选择更新时间:2012-12-26 09:05:31

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