V/
1. The new house is smaller than her old house.
2. Peter's the tallest people in my class.
3. The white dress is cheaper than the black one.
4. According to me, Maths is more difficult than English.
5. Mary is the most intelligent people in my class.
6. The Nile is the longest river in the word.
7. No mountain is more higher than mount Everest.
8. She's the most prettiest girl I have ever seen.