1. You should brush your teeth after meals.

2. You must switch off your mobile phone during exams.

3. We don't have to get up early at the weekends.

4. Doctors ought to wear a uniform at work.

5. You shouldn't eat in class.

6. A teacher must check students' homework.

7. Tom doesn't have to go to football practice on Sundays.

8. Students shouldn't be late for the exam.

9. Jane doesn't have to take the bus to school.

10. You should exercise to keep fit.

11. Ruth must answer phone calls and make appointments.

12. Students don't have to wear a uniform at school.

Ответ:

1. You should brush your teeth after meals. 2. You must switch off your mobile phone during exams. 3. We don't have to get up early at the weekends. 4. Doctors ought to wear a uniform at work. 5. You shouldn't eat in class. 6. A teacher must check students' homework. 7. Tom doesn't have to go to football practice on Sundays. 8. Students shouldn't be late for the exam. 9. Jane doesn't have to take the bus to school. 10. You should exercise to keep fit. 11. Ruth must answer phone calls and make appointments. 12. Students don't have to wear a uniform at school.

Объяснение:

Думаю верно написал. Удачи! )