Question

there are many trees and flowers on_______side of the street？

Answer 1

each一般用在三者之上,如：
each of the three students
either用于悉游两者
道路只有两个边,2,each
道路每一边都有花和树.
each side .
either表示 一边有,一睁巧销边没有.,3,there are many trees and flowers on_______side of the street.
选B
each是三者或三者以上中的每一个
either是两者取其一宽前
路只能有两边，所以用either,2,there are many trees and flowers on_______side of the street.
A.each
B.either
为什么不能用A啊?