One possible version:
As a middle school student, it's very important for us to know what to do and what not to do. We
should go to school on time. We shouldn't be late for class. In class, we should listen to the teacher
carefully. We should never copy others' homework. We should take part in sports and keep healthy.
We shuold help the people who are in trouble. When waiting for a bus, we should wait in line and wait
for our turns. On a bus, we should give seats to old people or people with a child. We should not speak
loudly, spit in public or litter. It's our duty to protect the environment around us.