prefix crossword puzzle

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Across
  1. 2. if you have more of something you don't need
  2. 3. this is related to ghosts
  3. 6. a vehicle with 3 wheels
  4. 7. something that advertises something
  5. 8. a system of rail way for trains
  6. 9. a vehicle with 2 wheels
Down
  1. 1. something that is near
  2. 4. a vehicle with one wheel
  3. 5. prepare
  4. 6. a material allowing light to pass through so that objects behind can be distinctly seen.