There are a lot of trees on both sides of the street=There are a _英语解答

There are a lot of trees on both sides of the street=There are a lot of trees on__ __of the street.
为什么只能填either而非each

人气：421 ℃　时间：2019-10-19 13:45:30

解答

either side
either 是“两者中的任何一” =两者都 both