What does it mean?
you must do your homework
What does it mean?
You must turn off your phone
What does it mean?
you mustn´t swim
What does it mean?
You mustn´t eat here
What does it mean?
you must wash your hands
What does it mean?
you mustn´t walk your dog
What does it mean?
you must put litter in the bin
What does it mean?
You must be quiet
What does it mean?
you mustn´t walk on the grass