He is always ready to help others, and _________, if ever, does he refuse when they turn to him for

He is always ready to help others, and _________, if ever, does he refuse when they turn to him for help．

A.seldom

B.hardly

C.never

D.sometimes

答案及解析： A

解析：

能引导倒装的只有A、C两项，而seldom与if ever语意一致。