题目内容

He is only too ready to help others, seldom, ______, refusing them when they turn to him.
A．if never B．if ever C．if notD．if anything
B
试题分析：考查if的省略形式。补全空格处则是：if he has ever refused,省掉多余部分可以为if ever。所以选择B。句意：他总是很乐意帮助别人，如果曾经拒绝过那些求助于他的人的话也是很少的。
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