______ to take the course must be the top students in the grade.

问题描述:

______ to take the course must be the top students in the grade.
把brave,enough,those三个词按照正确顺序排列以后填入空格内并说明原因

those brave enough
这句可以看成是those who are brave enough 的省略式,brave enough to take the course用来修饰those,这句话再省略点就是xx must be the top students in the grade.