Two Pair
Add 4 letters to each word to form a new word. The added letters should be two pairs of identical letters, in some order.

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1. B A _ B E _ _ _	13. N A _ _ V _ _ Y
2. B _ A _ N _ E _	14. O P T _ _ _ S _
3. _ B E _ _ _ N T	15. _ P E _ A T _ _
4. C H A _ _ I _ _	16. P E _ _ _ _ O N
5. C O _ D _ _ S _	17. _ _ P _ _ I T Y
6. D U _ _ N E _ _	18. S _ A G _ A _ _
7. _ _ _ _ G A T E	19. S _ A S H _ _ _
8. H A _ _ _ R _ D	20. _ _ S E _ _ L L
9. _ L I _ N _ T _	21. _ _ _ _ S I T E
10. _ _ L _ _ U T E	22. _ _ T A R _ _ T
11. M _ I _ L _ _ D	23. _ _ _ _ T I M E
12. M _ _ _ I _ S T	24. _ _ V E _ _ E R

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The solutions are here.