Ответ:

Перевод задания: Прочитайте правила одной из московских школ. Используйте must, mustn’t, can’t.

Students must wear a school uniform every day, but on Fridays they can be dressed as they wish. Students mustn’t be late for the lesson. Students can ask for help and have extra-classes. Students mustn’t talk at the lesson. Students can ask a question only with their hand raised.