Fill in the comparative or superlative adjectives or adverbs:
6. Sochi is (sunnier) than St. Petersburg.
7. It is (the best) film I've ever seen.
8. This actor is very funny. He is the funniest actor in the world.
9. This singer is very successful. She is the most successful one in America.
10. Richard studies (the hardest) in the whole class.