The result of the entrance exams was not made known to the pulic until last Thursday.为什么填 known 用 to know

问题描述:

The result of the entrance exams was not made known to the pulic until last Thursday.
为什么填 known 用 to know

正确语序为:make the result of the entrance exams known to the public .
考试不是人,不能知道什么事情,只能是考试被别人知道,故用被动语态