Beavers

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Across
  1. 2. an empty or open space
  2. 3. absolutely necessary
  3. 7. putting someone or something in danger
  4. 8. the name of the houses beavers build
  5. 10. to stay alive
  6. 11. the passage,door,or gate for entering
  7. 12. not changing, especially in behavior
Down
  1. 1. to keep in a certain place, position or activity
  2. 4. to make with materials and parts
  3. 5. overflowing of water
  4. 6. to place things in layers
  5. 9. a quick look