arrive on time
You must arrive on time
be late
You mustn't be late
be quiet in class
You must be quiet in class
break the rules
You mustn't break the rules
do homework
You must do homework
Drop litter
You mustn't drop litter
Fight
You mustn't fight
follow the rules
You must follow the rules
put litter in the bin
You must put litter in the bin
raise your hand
You must raise your hand
run
You mustn't run
shout in class
You mustn't shout in class
cheat on a test
You mustn't cheat on a test
eat in class
You mustn't eat in class
help your friends
You must help your friends
sleep in class
You mustn't sleep in class
