ENGLISH PUZZLE

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Across
  1. 2. valuable objectswhale: a very large sea mammal
  2. 6. being the only one of its kind
  3. 8. to postpone
  4. 10. amazing
  5. 12. to create sth by cutting it out of wood, stone, etc
  6. 13. a large stone structure where sb is buried
  7. 15. to continue in a particular state
  8. 16. a hole in the ground from which we can get water
  9. 17. a study; a research
  10. 20. property
  11. 21. to uncover
Down
  1. 1. to be the ruler of a country
  2. 3. a hard solid, mineral substance
  3. 4. not touched or changed in any way
  4. 5. great beauty
  5. 7. unchanged and not damaged by people
  6. 9. a large hole in the ground
  7. 11. the material which forms the trunks and branches of trees
  8. 14. being full of valuable objects
  9. 18. reddish brown clay
  10. 19. the side of a hill or mountain which rises abruptly