This house is the biggest___the three.横线上要填什么介词?为什么填OF,是固定搭配吗?

问题描述:

This house is the biggest___the three.
横线上要填什么介词?
为什么填OF,是固定搭配吗?

of 后面接同类事物
in 后面接范围
He is the tallest in the class.
He is the tallest of all the students.