You ....... return your library books on time.
must
At school, you .............. use your mobile in class.
mustn't
At home, you .......... make a mess.
mustn't
You ........... do your homework.
must
At school, you .......... study.
must
At home, you ......... help your parents.
must
You ........... help others.
must
You ........ change your shoes.
must
At school you ........... cheat in tests.
mustn't
You ......... drop litter.
mustn't
You .......... eat in class.
mustn't
At school, you .......... run.
mustn't
You .............. listen to your teacher.
must
At home, you .......... clean your room.
must