1. empty → full : dull → ?

2. kitten → cat : foal → ?

3. knife → cut : pen → ?

4. day → night : arrive → ?

5. ear → hear : eye → ?

6. scarce → plentiful : timid → ?

7. ancient → modern : narrow → ?

8. whisper → speak : stroll → ?

9. puppy → dog : calf → ?

10. finger → hand : toe → ?

11. author → book : composer → ?

12. scissors → cut : broom → ?

13. generous → selfish : cheerful → ?

14. minute → hour : centimetre → ?

15. hoof → horse : paw → ?

16. captain → ship : pilot → ?

17. hungry → eat : tired → ?

18. glass → fragile : rubber → ?

19. nest → bird : hive → ?

20. chapter → book : scene → ?

21. thermometer → temperature : clock → ?

22. joyful → happy : furious → ?

23. sapling → tree : chick → ?

24. hospital → patient : school → ?

25. helmet → head : glove → ?