He is ready to help others ,seldom, refusing them when they turn to him. A. if n
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He is ready to help others ,seldom, ______refusing them when they turn to him.
A. if never B．if ever C. if not D．if any
试题答案
B
解析:
由句意可知：他总是乐于助人，如果说他曾经拒绝过别人的话，那也是很不经常的。故选B。