Romeo and juliet

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Across
  1. 2. Dead people are put here
  2. 6. Someone who takes a message
  3. 8. To attack with a knife
  4. 9. Sadness
Down
  1. 1. If you drink this you'll die
  2. 3. You can stand on this outside a window
  3. 4. Only a few people know this
  4. 5. Dressed so that nobody can recognize you
  5. 7. A big party where people dance