ответ: can, may, be able to
1. . Can you tell me the time, please? 2. I’m sorry, there’s nothing I can do about it. 3. I’m sure he will be able to do it in future. 4. You cannot get back to your childhood. 5. Next summer we will be able to visit you. 6. When I was young, I could run very fast. 7. Meeting new people can be very exciting. 8. That cannot be true! It’s absolutely impossible. 9. I am not sure, but you may be right. 10. It was so noisy that we couldn't hear anything. 11. He said it may be wise to call the police. 12. The patient is recovering. Soon he will be able to go home. 13. Can you smell the gas?
14. It may rain soon, but who knows? If it rains, we may do some housework. 15. He knew he could always turn to his father for help. 16. The child was sure that nobody could help him. 17. The weatherman said it may snow by the end of the week. 18. Can I trouble you for a minute? 19. He hoped that he could run away from prison. 20 Nobody can tell me what to do. I may seem silly, but I am not!
Объяснение:
1.С,2.А,3.В,4.С,5.А.