He didn't drive carefully enough to avoid the accident 
2. They don't have enough free time to read novels every day 
3. She is intelligent enough to understand what I mean 
4. You are not old enough to join the club
5. She was not patient enough to wait for the doctor yesterday 
6. They were not enough money to buy the beautiful house 
7. He is tall enough to reach the shelf
8. They don't do carefully exercise enough to get good marks