1.He doesn't drive carefully enough to avoid the accident
2.They don't enough have free time to read novels everyday
3. She is intelligent enough to understand what you mean
4. You aren't old enough to join (in) the club
5. She isn't patient enough to wait the doctor yesterday
6. They don't have enough money to buy a beautiful house
7. He is tall enough to reach the shelf
8. They don't do exercise carefully enough to get good marks

1.He doesn't drive carefully enough to avoid the accident
2.They don't enough have free time to read novels everyday
4.You aren't old enough to join the club