Do the following crossword puzzle

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Across
  1. 4. A top of a mountain.
  2. 5. feeling of mad excitement
  3. 8. A young genius.
  4. 9. The latest time or date for completion.
Down
  1. 1. A person who has won an important competition.
  2. 2. A dead body.
  3. 3. A tall building in a city.
  4. 6. happening slowly
  5. 7. A long journey by sea.
  6. 9. A formal discussion of ideas.