General knowledge crossword

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Across
  1. 5. Superman's one weakness
  2. 7. A not so single lady
  3. 9. the number of legs on a spider
Down
  1. 1. Australian Currecy
  2. 2. An olympic gold medalist for the 100m sprint
  3. 3. The school for wizards
  4. 4. Capital city of Greece
  5. 6. a mans best friend
  6. 8. the number of American states