Plurals

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Across
  1. 7. I think
  2. 9. amount or number
  3. 10. hard to understand
Down
  1. 1. acrobats and clowns
  2. 2. days off
  3. 3. violin family
  4. 4. test of knowledge
  5. 5. used for gripping
  6. 6. receives waves
  7. 8. smoke director