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:考查主语从句。It是形式主语,真正的主语是 you could succeed in persuading him to change his mind这一主语从句,且从句不缺成分,句意完整,所以用that引导。选C。