Verified answer

1. Nina is ill. She must stay in bed.

2. Drivers must stop when they see the red light.

3. Betty asked: «Сan I open the window?"

4. Betty asked her father: "Сan I go to the concert tonight?" Her father said, "Yes, you can go."

5. Mary is free tonight. She can go to the dance.

6. Alec will have an English lesson tomorrow. He must study tonight.

7. Mark is a good student. He can speak English well.

8. There is no ink in my pen may I write with a pencil?

9. My friend gave me an interesting book to read. She said, "You may keep it for seven days."

10. You must do what the doctor says.

11. You must study much if you want to pass the examination well.

12. You must not smoke in the dining-room.

13. Little children must go to bed early.

14. If you are ill, you must consult a doctor.