Modals

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1. Can
2. Can
3. Add can or can't
4. Complete
5. Choose the best answer
6. Can/could/be able to
7. Must/have to
8. Mustn't/don't have to
9. Mustn't/don't have to
10. Mustn't/don't have to
11. Must/have to/should/ought to
12. Need/needn't/should
13. Can/could/have to/must/might/should
14. Perfect modals
15. Perfect modals