Нужны разъяснения по поводу. Составьте 10 предложений с глаголом must mustn't на любую тему

You must be an obedient boy.


They must write an article about our school.


She must help her mother around the house.


He must built a new big house for his family.


You must be nice with your younger sister.


You mustn't enter the university this year.


She mustn't help Tom with his English homework.


They mustn't take a part in this meeting.


We mustn't listen your lying stories.


I mustn't speak with stranger about my life.





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 You mustntn talkat the lesson(. Ты не должен разговаривать на уроках)