______ all the students,Billy is the cleverest.tell me the reason

______ all the students,Billy is the cleverest.tell me the reason
______ all the students,Billy is the cleverest.
tell me the reason

______ all the students,Billy is the cleverest.tell me the reason
of
在所有的学生中,billy是最聪明的.
在最高级的比较范围中,在什么什么中 介词用of

Among之中