Unit 12 - Vanished!

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Across
  1. 4. to hit something hard
  2. 5. when something becomes impossible to find
  3. 8. not likely to happen
  4. 9. an answer or a reply
  5. 11. shining strongly
  6. 12. to try to find out the truth about something
  7. 14. a part of something
  8. 17. an attempt to do something
  9. 18. to be bright and clear
  10. 19. to travel toward a particular place
Down
  1. 1. to successfully complete something by working hard
  2. 2. unluckily
  3. 3. to stay somewhere for a short time
  4. 6. to move toward or get closer to something
  5. 7. a journey in an aircraft
  6. 10. to experience physical or mental pain
  7. 13. facts or signs that show something is true
  8. 15. to show that something is true
  9. 16. a track created by people