For the benefit of everyone

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Across
  1. 3. when people on top of their class are gathering
  2. 6. inside of many layers
  3. 7. when you purchase something for your benefit
  4. 8. an object or thing in your way
  5. 9. when the justice has been served
Down
  1. 1. very important
  2. 2. when you do something that you promised
  3. 4. the number of people dying
  4. 5. man or woman