Modal Verbs

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Across
  1. 1. situations, polite requests"
  2. 4. ___ wear a seatbelt.' (obligation)
  3. 6. ___ not smoke here.' (prohibition)
  4. 9. often used for the future
  5. 13. for possibility, less certain than 'may'"
  6. 14. to 'should', moral duty"
  7. 19. ___ be tired. He worked all day.' (deduction)
  8. 20. ___ you say that?' (challenge)
  9. 21. ___ to respect his parents.' (moral duty)
  10. 22. ___ rain later.' (possibility)
  11. 23. ___ call you tomorrow.' (future)
  12. 24. meaning 'to have courage'
Down
  1. 2. ___ swim when she was young.' (past ability)
  2. 3. past habits or states
  3. 4. I open the window?' (permission, formal)"
  4. 5. ___ go now, it’s late.' (advice)"
  5. 7. ___ travel more if I had money.' (hypothetical)
  6. 8. obligation or logical deduction
  7. 10. for advice or recommendation
  8. 11. used for ability or permission
  9. 12. ___ study more.' (advice)
  10. 15. British modal, suggestion or promise"
  11. 16. for past ability or polite request
  12. 17. expressing necessity
  13. 18. ___ to play football when I was a child.' (past habit)
  14. 25. for formal permission