What is this rule ?
Obey the rules
We must/mustn't eat in the class
Mustn't
What is this rule ?
Don't shout in the class.
We must/mustn't wear school uniform.
Must
We must/mustn't shout in the class.
Mustn't
We must/mustn't obey the rules.
Must
We must/mustn't be kind.
MUST
We must/mustn't protect the environment.
Must
We must/mustn't run in the corridor.
Mustn't
We must/mustn't raise our hand.
Must
We must/mustn't chew gum.
Mustn't
We must/mustn't fight.
Mustn't
What is this rule ?
Listen the teacher carefully
We must/mustn't listen the teacher carefully.
Must