=> 7. The map is too old to read. 8. He didn't speak slowly enough for us to understand him.
15. The room was comfortable enough for us to fall asleep easily. 16. It was so cold that they couldn't keep working in the field./ It was too cold for them to keep working in the field. 17. He spoke slowly enough for us to understand him. 18. The fair was so noisy that we couldn't hear each other./ The fair was too noisy for us to hear each other.
