Tell Me, Tree

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Across
  1. 1. a small enclosed space
  2. 2. polite without being friendly
  3. 3. makes you sick
  4. 5. rhymes with bunny
  5. 7. to have sadness over
  6. 8. to practice something so it is learned
  7. 9. a big grassy area
  8. 12. rhymes with berry
  9. 13. to offer a suggestion
Down
  1. 1. leader of a group
  2. 2. to end
  3. 4. straight without moving
  4. 6. to think something is true
  5. 10. short
  6. 11. a very young human