1. Are you able to play the piano?
2. You should not drink cold water.
3. May I come in?
4. I need to find my notebook.
5. I know you will be able to arrive on time.
6. Yesterday, he had to sing, but the got sick.
7. I had to meet her brother.
8. Everyone must know this.
9. You should not go there.
10. He will be able to fix our TV.
11. Yesterday Olga had to meet Pete, but she was late.
12. You must do it.
13. We are able to dance well.
14. Every morning he has to come to work at seven.
15. May I come in?
16. You should drink hot tea. It's very cold.