1. It was the most interesting film that I have ever seen.
2. It is the hottest day today.
3. The Nile is the longest river in the world.
4. A colibri is the smallest bird in the world.
5. He is the cleverest boy in his class.
6. She is the politest at her office.
7. This is the shortest way to the bus-station.
8. The house is the cheapest in this district.
9. Lake Baikal is the deepest lake in the world.
10. My mother is the most honest in our family.