ok

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Across
  1. 2. Bottom of the class (5)
  2. 4. New Zealand flightless bird (4)
  3. 5. Set of straps on a horse (7)
  4. 6. Man's best friend
  5. 8. Ring of flowers or foliage (6)
  6. 9. Generous (7)
  7. 12. Munched (3)
  8. 13. Warn of danger (5)
  9. 17. Likes to chase mice
  10. 19. Care for, bring up (4)
  11. 20. Put in the post (4)
  12. 23. Body of salt water separated from the sea by a coral reef (6)
  13. 24. Large marsupial
  14. 26. Time off sick from school (7)
  15. 28. Crumbling building (4)
  16. 30. Checking out (a person) before making a job offer (7)
Down
  1. 1. Small measurement of length (4)
  2. 2. Nasty, unpleasant (11)
  3. 3. British nobleman (4)
  4. 6. Interjection on making an obvious mistake (4)
  5. 7. Animal foot (3)
  6. 10. Domestic animals on a farm (9)
  7. 11. Flying mammal
  8. 14. Extends (9)
  9. 15. Press clothes (4)
  10. 16. Drum major’s stick (5)
  11. 18. Widely grown cereal crop (5)
  12. 21. Tony ____, Labour Cabinet minister in the 1960s and 1970s (4)
  13. 22. Has a trunk
  14. 25. Consumer or operator (4)
  15. 27. Correct, check (a text) (4)
  16. 29. Legal document read after a person’s death (4)