1, Tom’s room is the cleanest of all.
2, Of all Polish writers, Sienkiewicz is the greatest one.
3, Egypt is one of the oldest countries in the world.
4, Canada is the second largest country in the world.
5, Winter was the worst time for us.
6, It is the ugliest town I know.
7, This is the widest road in the country.
8, What is the smallest animal in the world?
9, Is the whale or the elephant the biggest animal in the world?
10, I am the worst student in the class.