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Across
  1. 2. a sport involving a horse and rider.
  2. 7. exposed to something dangerous.
  3. 8. a tongue someone speaks.
  4. 9. to expand on a particular idea.
  5. 10. something particularly pricey.
Down
  1. 1. a substance used to stimulate immunity to a disease.
  2. 3. To have a doubt about something and ask for clarification.
  3. 4. have a strong emotion effect over something.
  4. 5. to change someone’s opinion.
  5. 6. Something unclear or uncertain.