It never occurred to me you could succeed in persuading him to change his mind.A. whichB.

问题补充：

It never occurred to me you could succeed in persuading him to change his mind.

A. which

B. what

C. that

D. if

答案：

A. which

B. what

(答案→)C. that

D. if

解析：句意：我从未想到你能成功说服他改变主意。it never occured to me that为固定句型，这里的it为形式主语，真正的主语是后面的that引导的从句，故选C。