The long 'I' Sound as in tiger

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Across
  1. 2. The envoronment
  2. 3. Be careful with these
  3. 5. Notised or remembered
  4. 8. Someone who runs a library
  5. 10. It is important to keep you __________ clean.
  6. 11. If you want to sell something, you need to do this
  7. 12. You need one of these to drive a car.
  8. 14. You read these on the road
  9. 15. Tall or big
  10. 16. You say this to people when you are leaving
  11. 18. The step before chewing
  12. 19. Many do this when they are tired.
Down
  1. 1. Happy of yourself or someone else
  2. 4. You need a pen to do this
  3. 6. Shocking or not quessed.
  4. 7. This happens in a storm
  5. 9. A yummy food.
  6. 11. You feel this when you are nervous
  7. 13. Monkeys can do this well
  8. 17. Many find this tricky