What are the rules at Haywood School?

What are the rules at Haywood School?
can,have to,should,may,shouldn't,mustn't(单词可重复使用)
At Haywood School,pupils usually wear school uniform,but on Non-Uniform Day,they _____ wear what they want.They don’t take their jackets into the classrooms,so they _____ leave money in their jacket pockets (口袋).
At break,they _____ leave the classrooms,but if it is raining,they _____ stay in the classrooms.Of course they _____ bully (欺负) other pupils or run around.
At Haywood School,pupils _____ get lunch in the cafeteria.Some pupils bring their own lunch.Of course they _____ eat it in the classrooms.They _____ go to the cafeteria,too,and eat it there.