We will have a math test ______algebra this afternoon 选择哪个为A on B of C at D in 为什么?

问题描述:

We will have a math test ______algebra this afternoon 选择哪个为
A on B of C at D in 为什么?

C at
this afternoon 今天下午

A吧?
凭语感吧?

A
on在这里表示"在某个方面"