you must wash the dishes
you must tidy your room
you must listen to your teacher
you must do your homework
you must help others
you must write thank you letters
you must wash the car
you must eat your dinner
you must stay
you mustn't stay
stay
don't stay
you must listen
you mustn't listen
listen
don't listen
you must way
you mustn't wait
wait
don't wait
you must go
you mustn't go
go
don't go
