unit 6 puzzle

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Across
  1. 1. strange
  2. 4. a person who studies the nature and meaning of existence, reality, moral,etc.
  3. 6. opposite
  4. 9. make sb behave in a more polite way
  5. 11. happening or existing without stopping
  6. 12. a creature that is ugly and frighening
  7. 15. realize or notive sth
Down
  1. 2. paid work
  2. 3. shake slightly
  3. 5. happening by itself without being planned
  4. 7. complete one's studies and receives a certificate or diploma
  5. 8. extremely bad or evil
  6. 10. a person who studies economics
  7. 13. a way from one place to another
  8. 14. general principles or ideas of a subject