1. Mike’s sports car is more expensive than mine.
2. Travelling by train is cheaper than travelling by plane.
3. Which is the highest mountain in the world?
4. John is said to be the cleverest student in his class.
5. He is more responsible than his brother.
6. It is much warmer today than it was yesterday.
7. He got better grades than his fellow students.
8. I believe that this project is the hardest of all.
9. Don’t you think that football is more exciting than tennis?
10. This is the biggest airport in the world.
11.It was the worst film I had ever seen!
12. Tom is much happier today than yesterday.
13. She is the nicest person we have ever met.
14. Sandra thinks that she is the most beautiful girl in her class.
15. Your suitcase is heavier than mine.