football in the classroom. ( not play on the blackboard. (not write ) left at the corner. (not turn) the door open. (not leave) in the library. (not talk) in the classroom. (not eat or drink the animals. (not feed) the flowers. (not pick) on the grass. (not walk) in the exam. (not cheat)​

1. Dont play on the blackboard2. Dont write3. Dont leave4. Dont talk5. Dont eat or drink6. Dont feed7. Dont pick8. Dont walk9. Dont cheat