Super team

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Across
  1. 4. This come from elephant tusks
  2. 5. Middle of a city
  3. 8. You parent’s father
  4. 10. Hard, black rock
  5. 11. Areas in the mountains
Down
  1. 1. Nighttime
  2. 2. Person who builds things
  3. 3. This is used to make bread
  4. 6. Clock you wear on your wrist
  5. 7. At the same time
  6. 8. Present
  7. 9. Comfortable chair