it is also___cheaper than school uniform used to be.

问题描述:

it is also___cheaper than school uniform used to be.
为什么空格处要填a lot,而不用more?

在形容词比较级中比较级要用much,a lot,far或者是a Little修饰,more用于组成部分双音节或者是多音节形容词的比较级.more beautiful.