You must always do your homework.
You must wear a uniform.
You must be polite to your teachers and classmates and respect them.
You mustn't mob your classmates.
You should keep classrooms clean.
You must listen carefully at lessons
You must always do your homework.
You must wear a uniform.
You must be polite to your teachers and classmates and respect them.
You mustn't mob your classmates.
You should keep classrooms clean.
You must listen carefully at lessons