Ответ:
1. Two heads are better than one.
2. This is the most interesting book I have ever read.
3. Concorde is the fastest plane in the world.
4. Mike is taller than Nick.
5. Harrods is the most expensive shop in London
6. This is the cheapest hotel in our city.
7. We discuss the latest news.
8. My elder brother is five years older than my senior.
9. The first exercise is more difficult than the second.
10. The weather has become worse. It looks like raining.