Empty Eggs

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Across
  1. 1. 100 years
  2. 4. a grey lead is a _______
  3. 6. the opposite of unnecessary
  4. 7. instructions for baking
  5. 9. people need it to get better
  6. 10. every ten years
Down
  1. 2. a guess
  2. 3. you reserve this a Christmas
  3. 5. fuels cars
  4. 7. a 30 minute break
  5. 8. you need ________to prove something