You _____shout in the library.
mustn't
You ____put litter in the bin
must
You ______do homework
must
You ____ turn off your phone in the class.
must
You _____talk to strangers
mustn't
You _____walk your dog in the park.
mustn't
You_____walk on the path
must
You ______eat in the museum
mustn't
You ______listen to the teacher.
must
You ______be quiet in the theatre
must
You _______run in the class.
mustn't