1. He is tired. He can't go to school.

-> he is tired enough for him not to go to school

2. He is very stupid . He can't understand this matter.

-> he is intelligent not enough for him to understand this Matter

3. this book is very difficult . I can't read it

-> this book is easy not enough for me to read it

4. these exercises are very hard . She can't do them

-> these exercise are hard enough for her not to do them

5.she was too busy . She had no time for games

-> She was busy enough for her not to have no time for games

6.this hat is very small . I can't put it on

-> this hat is big not enough for me to put it on

7. he was so poor . he couldn 't buy this house.

->he was rich not enough for him to buy this house.

8. the sound is very low . we can't hear it

->the sound is hight not enough for us to hear it

9.this book is very expensive . we can't hear(sai)->buy it

->this book is cheap not enough for us to buy it.

10. the soup is very hot . I can't eat it

->the soup is cold not enough for me to eat it

11. Mr Nam is so old . he can't go to work now.

-> Mr nam is young not enough for him to go to work.

12.Maria is so stupid . she can't add two and two

-> Maria is intelligent not enough for her to add......

13.the ice is too thin . we can't malk on it

->the ice is fat not enough for us to malk on it

14. he drives very fast . we can't follow him

-> he drives slow not enough for us to follow him

15.tom speaks quickly . i can't hear anything

-> tom speaks slowly not enough for me to hear anything

16.she wrote too badly . we couldm't read

-> she wrote well not enough for us to read

17. she sings so badly , we can't hear all the song

-> she sings well not enough for us to hear all the song