We ____ wash our hands before we eat.
must
We ____ bring the stuff we need for lessons.
must
We ____ leave the class tidy and clean.
must
We ____ run in the classroom.
mustn't
We ____ put litter in the bins.
must
We ____ shout in the classroom.
mustn't
You ____ arrive late in class.
musn't
You ____ eat or drink in the class.
musn't
You ____ listen to the teacher.
must
Students ____ bully their classmates.
musn't
You ____ study hard if you want to pass the exam.
must
We _____ use our mobile phones in school.
musn't
We ____ talk quietly.
must
You _____ raise your hand to speak.
must
We ____ be nice to each other.
must
Students ____ be polite to each other.
must
You _____ sleep in class.
musn't