We ... listen to the teacher.
must
We ... put the hand up to speak.
must
We ...come to classes on time.
must
We ... take part in project work.
must
We ... behave well.
must
We ... work together with the class.
must
We ... mustn't bully other students.
mustn't
We ... be noisy.
mustn't
We ... come late for classes.
mustn't
We ... interrupt other students.
mustn't
We ... fail the test.
mustn't
