Răspuns :
I MUST BE at school on time.
I must do my homework.
I mustn 't be late for school.
I mustn't eat in class
must=trebuie
must not=nu ai voie
At school,you must do your homeworks.
At school,you must listen to the proffesors.
At school,you must not talk during classes
At school, you must not climb on a bench