Записать на английском 5 предложений, что должны и не должны делать ученики в школе)

Должны:

Puples must lern at school.

Pupels must preper for the lessons at school.

Pupels must listen techer at school.

Не должны:

Pupils mustn't fight there.

Pupils mustn't be bad.

Pupils mustn't not to do their homework.