back to the future crossword by benjamin

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Across
  1. 2. What makes time travel possible (13)
  2. 3. Doc's first name (6)
  3. 6. The instrument that marty plays (6)
  4. 9. "What are you looking at ________?" (8)
  5. 10. "____ pine mall" At the end (4)
  6. 11. The song marty plays at the enchantment under the sea dance (12)
  7. 14. "1.21 _________" (9)
  8. 16. The principle (10)
  9. 19. Biff's 2015 ancestor (5)
  10. 20. Marty's surname (5)
  11. 21. Song played at the beginning of the first film (11)
  12. 22. "Make like a ____" (4)
  13. 23. Marty's mother (8)
  14. 24. "I'm your _______" (7)
Down
  1. 1. "Great _____!" (5)
  2. 4. Chuch Berry's cousin (6)
  3. 5. slow song played at the dance (10)
  4. 7. Biff's 1885 ancestor (6)
  5. 8. "Where we're going, we don't need _____"
  6. 12. Doc's dog (8)
  7. 13. "I think he dropped his ______" (6)
  8. 15. "My partner in ____" (4)
  9. 17. "____ pine mall" At the beginning (4)
  10. 18. The car turned into a time machine (8)
  11. 19. Marty's father (6)