I believe in unicorns

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Across
  1. 3. What mythical creature has a horn?
  2. 6. What is it called when you save someone?
  3. 7. Where are books kept in a school?
Down
  1. 1. What is another name for the supernatural?
  2. 2. What are kept in a library?
  3. 4. What verb means to think something is true or real?
  4. 5. What tell us tales?