On ___sides of the street there are lots of colorful flowers.
问题描述：
On ___sides of the street there are lots of colorful flowers.
A.each B.both C.either D.all
为什么?
答
side后面加s是复数形式,首先可以排除A和C,因为这两个词语后面是跟单数.其次根据句意：在街道的两侧有许多花,both形容的是两者,all是三者以上,应该是街道两侧所以要用both.
这里on both sides of the street 的同义词是on each /either side of the street