The data shows successful people have in mon is they have perseverance.
A. that that; that
B. that what; that
C. what that; what
D. all that; because
网友回答
A. that that; that
(答案→)B. that what; that
C. what that; what
D. all that; because
解析：考查名词性从句。shows 后是一个宾语从句，宾语从句中由what 引导的名词性从句作主语，is 后是由that 引导的表语从句。故选B 。