Combine each pair of sentences , using ENOUGH .... TO.V or ENOUGH FOR... TO.V
22. you aren't very old . You can't understand it
23. He is sick . He needs a doctor
24.the book is small . I can put it in my pocket
25. Brown isn't rich .He can't buy a car
26 . Those shoes are large . You can wear them
27. your sister was clever .She could do this exercise in a few minute
28 . the air is fresh .we can have some holiday
29. peter is very ill .he must see the doctor
30. Marry isn't old .she can't do that work