12. The weather was warm enough for they to have a walk in the garden
13. The story too funny for him to stop laughing
14. It was such a exciting match that all the fans shouted loudly
16. The milk is so excellent that the children want some more
17. My sister is so young that she can't go to the zoo alone
19. They drunk so much coffee that they couldn't sleep all night
20. The road isn't wide enough for two cars to pass each other
21. The game isn't easy enough for the children to play
23. He runs too slowly to win a prize
24. The downtown area is so crowded that you can't get a taxi
26. He drank so much coffee that he couldn't get to sleep
27. I was tired enough to fell asleep in the armchair