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Across
  1. 3. sth that one must do before anything else
  2. 5. make sth into a particular shape or form
  3. 7. awkward and ungraceful
  4. 8. the quality of being new and different from anything existing
  5. 11. an example of the introduction of sth new
  6. 12. worth doing, worth the trouble taken
  7. 14. a complete change of order, direction or position
  8. 15. an important event or discovery
  9. 16. extremely large
  10. 18. help the growth and development of
  11. 21. come out
  12. 22. keep sth secretly in one’s mind
  13. 23. based on truth or sound reasoning
Down
  1. 1. better than average or than others of the same type
  2. 2. happening again and again, repeated
  3. 4. ability to do sth easily and well
  4. 6. state too strongly
  5. 9. review of a past course of events
  6. 10. brave and confident
  7. 11. purpose
  8. 13. make sth seem large, better, etc, than it really is
  9. 17. make a short account of the main points of sth
  10. 19. action different from what is usual or expected
  11. 20. afraid
  12. 21. (cause to) develop gradually