4 упр
1. You mustn't step on the floor! It's still wet.
2. I don't have to wake up early today. It's Saturday.
3. You mustn't hit the other players.
4. You mustn't sleep during the lesson.
5. You don't have to bring jacket. It's warm outside.
6. Students mustn't cheat during the test.
7. You mustn't drive without wearing a seat belt.
8. You mustn't touch hot objects with bear hands.
5 упр сделаю в коментах через минут 15...