1. Tom is older than Richard. 2. Fred is not so old as Tom.3. Tom is the oldest of the three. 4. This book is better than that. 5. This book is not so good as that. 6. This book is the best of the three. 7. That exercise is is more difficult than this one. 8. The weather is worse today than it was yesterday. 9. It was not so bad yesterday than it is today. 10. Today's weather is the worst of the week.