Ответ:

  1. the most attractive (attract) actress?
  2. the most successful (success) musician?
  3. the best traditional (tradition) dish?
  4. the sweetest (taste) sweet you've ever eaten?
  5. the most stylish (style) outfit?
  6. the most careful (care) driver you know?
  7. the most optimistic (optimist) friend of yours?
  8. the most educated (educate) person you know?
  9. the best thing to do on a rainy (rain) day?
  10. the most boring (bore) film you've ever seen?
  11. the least enjoyable (enjoy) holiday you've ever had?
  12. the most horrible (horror) food you've ever tasted?