Books + modality

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Across
  1. 6. number of people who read an author's book
  2. 8. They are ___ to get married in the end [almost certain to]
  3. 9. Book that records events, times.(Journeys made by a ship)
  4. 11. Book containing articles about human knowledge, arranged in alphabetical order
  5. 16. difficult to read
  6. 17. moving and sad
  7. 19. It was _____that the negotiations were going badly [obvious]
  8. 20. the ability to understand what something is really like
Down
  1. 1. If you aren't highly disciplined when you go on a diet, the ____ are you won't succeed.[It's probable that]
  2. 2. The ___are he'll get the job (it is likely that)
  3. 3. not a complex book, slightly negative connotation
  4. 4. gives a lot of useful information
  5. 5. Technical book with instructions
  6. 7. Collection of poems, short stories by different authors
  7. 10. so interesting that it holds your attention totally
  8. 12. mysterious
  9. 13. causing great fear
  10. 14. She'll be here by five o'clock, ____[I am sure]
  11. 15. often cruel or disgusting, concerned with death
  12. 18. in the face of a bad situation