It never occurred to me you could succeed in persuading him to change his mind.
A. that
B. if
C. which
D. what
网友回答
(答案→)A. that
B. if
C. which
D. what
解析：本题考查固定句型。It occurs/occurred to sb that ...是固定句型，意思是：突然想起......，其中it为形式主语，真正的主语是有that引导的主语从句，选C。