Levelling up your vocabulary

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Across
  1. 2. Let
  2. 7. Show
  3. 9. Says the opposite
  4. 11. Carry on
  5. 15. Very important to have
  6. 16. Allow
  7. 18. Get through it
  8. 20. Certainly
Down
  1. 1. People in a car
  2. 3. Speak to each other
  3. 4. Get smaller
  4. 5. Easy to see
  5. 6. A lot of
  6. 8. Reach the goal
  7. 10. Do again
  8. 12. Get bigger
  9. 13. strong
  10. 14. Break
  11. 17. Unclear
  12. 19. Grow