Прочитайте правила поведения учащихся в школе и вставьте пропущенные слова must, mustn't, can, can't. Запишите ответы кратко. 1. Students ________ wear a school uniform every day, but on Friday they ________ be dressed as they wish. 2. Students ________ be late for the lesson. 3. Students ________ ask for help and have extra-classes. 4. Students ________ talk at the lesson. 5. Students ________ ask a question only with their hand raised.