UNIT 1. BACK TO SCHOOL » Стр.24 (2)

Fill in should/shouldn’t, must/mustn’t, hove to/don't have to. 1. You must be in time for all your lessons! 2. We don’t have to take our sports clothes – there’s no PE today. 3. Bill can't do this task – you should help him. 4. Molly shouldn’t go to school by bike – it's raining. 5. I have to do my homework before I meet with my friends. 6. The students mustn't be dirty and untidy at school.