What is it?

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Across
  1. 2. to eat something
  2. 5. you did what you were asked to do
  3. 7. books about real things
  4. 10. book about someones life
  5. 11. place to check out books
  6. 12. made up stories
  7. 13. to know something is not allowed by do it anyway
Down
  1. 1. someone who always expects bad things to happen
  2. 3. ordinary and often dull
  3. 4. to act as if something else is unimportant
  4. 6. person to help you in a library
  5. 8. to think about something carefully
  6. 9. a deep and meaningful thought