Riddles 2

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Across
  1. 4. What has 88 keys but cannot open a door?
  2. 5. What's the saddest fruit?
  3. 7. What dog never barks?
  4. 9. What belongs to you but everyone else uses it?
Down
  1. 1. What room can you never enter?
  2. 2. What can run but not walk?
  3. 3. What has bark but no bite?
  4. 6. What is broken before you use it?
  5. 8. What flies with no wings?