Prefix and Suffix review

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Across
  1. 2. A mythical animal with one horn.
  2. 5. To walk in the past.
  3. 6. The most tall.
  4. 8. A shape with 3 angles.
  5. 9. A bike with 2 wheels.
Down
  1. 1. The look at something before. A sneak peek.
  2. 3. Not stopping.
  3. 4. The most cold.
  4. 7. A bike with 3 wheels.