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

问题补充：

He is only too 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：考查省略。A项If never 如果从没有，B项中If ever 如果曾经有； C项中If not 如果没有； D项中If any如果有的话（否定句或疑问句）；句意： -他总是乐于助人。如果有话，也很少在有人求助的时候拒绝别人。If ever=if he has ever refused….选B。