2. 1.quiet 2. bigger 3.better 4.worse 5.nervous 6. fast 7. colder
3. 1.It is a very nice house. It is the nicest house in the street.
2. This is a cheap restaurant. It's the cheapest restaurant I've ever been.
3. It was a very valuable painting. I'm sure it was the most valuable painting in the gallery. 4. She's a very good tennis player. Her trainer says she is the best tennis player. 5. He's a very dangerous criminal. The police says he is the most dangerous criminal in the country. 6. We should buy him a beautiful present. Last year we gave him the most beautiful gift of all in his birthday.