1 Her new house is smaller than her old one
2 Peter is the tallest student in the class
3 The white dress is cheaper than than the black one
4 According to me, Maths is more difficult than English
5 Mary is the most intelligent in the group
6 The Nile river is the longest in the world
7 No mountain in the world is higher than Mount Everest
8 She is the prettiest girl I have ever met
9The more he works, the more tired he feels
10 That computer works worse than this one