—It’s thirty years since we last met. —But I still remember the story, believe it or not,

—It’s thirty years since we last met.
—But I still remember the story, believe it or not, we got lost on a rainy night.
A. which
B. that
C. what
D. when

A. which(答案→)B. thatC. whatD. when解析：通过对句子的分析可知，believe it or not是插入语，在此句中that引导的是the story的同位语从句。

感谢回答，我学习了