You................wash your hands.
must
You..............raise hand to speak.
must
You ...............sleep in class.
mustn't
You ..............listen to the teacher.
must
You.................go to school.
must
You.............take photos.
mustn't
You.............talk on the phone in class.
mustn't
You...............wear a mask.
must
You .... do your homework.
must do
at the library
You mustn't talk in the library
