Dr.seuss puzzle

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Across
  1. 4. an the cat
  2. 6. for grate day
  3. 7. book tooth
  4. 10. the if i ran
  5. 11. wacky
  6. 13. beyond on
  7. 15. old only once
Down
  1. 1. book foot
  2. 2. in fox
  3. 3. cats the
  4. 5. speck to lorax
  5. 8. Christmas stole the Grinch
  6. 9. daisy head
  7. 12. on hop
  8. 14. sleep