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Across
  1. 1. The wheels on the ______ go round.
  2. 2. Ride it in the desert.
  3. 3. A big boat.
  4. 5. Travel on rails by a ______.
  5. 6. Travel by this to space.
  6. 8. Cross the river with your car, but not on the bridge.
Down
  1. 1. Travel in the sky using hot air.
  2. 2. A boat with pointed ends.
  3. 3. Dogs pull it in Alaska on snow.
  4. 4. Travel on four wheels.
  5. 7. Ride this four-legged animal on the farm.