He is ready to help others seldom refusing them when they turn to him.A. if neverB. if

问题补充：

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

答案：

A. if never

(答案→)B. if ever

C. if not

D. if any

解析：考查固定结构。If ever=if she has ever refused to help others.句意：他很乐于助人，如果他曾经有过拒绝帮助别人，那也是很少的。