Two Stories , One Puzzle

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Across
  1. 2. , to make a low unhappy sound
  2. 4. , to give something to someone for a period of time
  3. 7. , living by killing other animals
  4. 8. able to move quickly and easily
  5. 11. , something intense or frightening
  6. 12. , being shocked to the point of being unable to speak
  7. 15. , moving quickly or suddenly
  8. 16. , to persuade someone gently
  9. 18. , moving slowly and heavily
  10. 19. feeling extremely ashamed or embarrassed
  11. 20. , a difficult or unpleasant situation
Down
  1. 1. , a formal suit worn on occasions
  2. 3. , a narrow passage between or behind buildings
  3. 5. , to make a loud unpleasant noise
  4. 6. , no longer feeling distressed or anxious
  5. 9. , being in a state of extreme panic or anxiety
  6. 10. , to move quickly to avoid being seen
  7. 13. , to move slightly or change position
  8. 14. , to smile broadly or widely
  9. 17. a tank for keeping fishes and other acquatic life