14. These oranges are sweat enough for us to eat
15. This shelf is short enough for the boy to reach
16. This road isn't safe enough for her to go at night
17. The water in this pool isn't pure enough to drink
18. Martha isn't beautiful enough to have a boyfriend
19. This room isn't good enough for us to study
20. He studied isn't good enough to pass his exam

18 - Martha is ugly enough to have a boyfriend
19 - This room is dark anough for us to study
20 - He sudied is badly enough to pass his exam 

14 - These oranges is sour  enough for us to eat
15 - The self is high enough for the boy to reach
16 - This road is dangerous enough for her to go at night