I must wash the dishes every saturday.
I must walk the dog every day.
I must help my mum with shopping.
I must make my bed every night.
I must do my homework at weekends.

I mustn't argue with my mum.
I mustn't go out after 10 p.m.
I mustn't watch TV on mondays.
I mustn't play computer games before I do my homework.
I mustn't beat my dog, when he pee on the floor.
You must wear uniform.
You musn't smoke in school.
You must do homework
You must do housework.
You musn't run in school.
You musn't open a window in school.
You musn't watch a TV at 12 p.m
You must hear teacher.
You must have change boots on pe (wf)
You musn't open the door stranger (nieznajomy)