写完了,如下：
Be a civilized student
As middle school students, we should behave well, because we are the new generation of the society, Besides, we must also make good examples to the younger puples.
But recently, there are some students who don't behave well. They eat snacks in class, which makes the teachers really angry. And there are some students wear funny clothes to school .After class, some students litter the rubbish all around the classroom.
In my opinion, first, we must obey the school rules and never bring snacks to school. Second, we must wear uniforms to school. Third, it's our duty to keep our classroom clean.