Aren't lucy and Lily in different class?Yes,they are.

问题描述:

Aren't lucy and Lily in different class?Yes,they are.
改错

把class改为classes.原因:
different意思是不同的,不同的什么东西应该是复数,就2楼是对的,其他人都在胡说,我是教师.上面的我敢保证没学过英语,就2楼是对的.
same才需要加the