Read the sentences. Which contain comparative forms and which contain superlative forms?

1. Some people worked harder than everyone else.
2. They were the best in the class
3. Let's look more closely
4. This group is better than the other one
5. The most gifted students practised for over 10.000
6. Those students played the least
7. She writes the fastest
8. Pop songs are easier to play than classical pieces.