1. Sarah is better at chemistry than Susan.
2. He is the youngest in the group.
3. Iron is harder than stone.
4. No one in the team is better football player than Tom.
5. He plays the guitar better than me.
6. My sister is the tallest student in the class.
7. HCM city is the largest city in Vietnam.
8. This is the most interesting story I have ever heard.
9. My mother cooks better than my father does.
10. My sister is the tallest student in the class.
11. Your house is smaller than mine.
12. The red car is more expensive than the black car.
13. That film is not as interesting as this film.
14. Your kitchen is bigger than mine.
15. My mother is the oldest member in my family.
16. Tam is the tallest (student) in my class.
17. My mother cooks better than I do.
18. Jack can play tennis better than him.
19. You spend more money than I.
20. This book is not as cheap as I think.