1. Some people just aren’t able to sing.
2. She could be in the airport.
3. I could ride a horse when I was six.
4. John might not go to Turkey.
5. You mustn’t block the emergency exit.
6. You mustn’t use mobile phones on the plane.
7. You must fasten your seat belt for landing and taking off.
8. He may be there to meet us.
9. You shouldn’t tell anybody about it.
11. He might get it.
12. She couldn’t sell it.
13. Roberto might leave for Australia soon.
14. You shouldn’t have shouted at Thomas yesterday.
15. We could go for a walk in the country.
16. The old woman might fall on the street and break a leg. She should carry a stick.
17. She must be ill in bed.
18. You should have come with me.
19. I might have dropped them when I went shopping.
20. You mustn’t go in.
21. She must have bought it.
22. I must have left it at home.
23. The boy should help his parents on the farm during the summer holidays.
24. The library must be closed.
