一个英文题There are a lot of tall buildings on___side of Huangpu River.a)either b)every c)both

题目

一个英文题There are a lot of tall buildings on___side of Huangpu River.a)either b)every c)both
我知道c一定是不对的,若是用c,则应该是“sides”,但a b 应该怎么选呢?

答案

either.因为every要大于等于三.比如every diretion.