Her new house is smaller than her old house

peter is the tallest student in my class

the white dress is cheaper than the black dress

According to me,Maths is harder than English

Marry is the most intelligent person in my group

The Nile is the longest river in the world

No mountain is higher than Mt Everest

She is the most beautiful girl I've ever met

That computer doesn't work as good as this one

Your bag is different from mine

Good Luck 

1,Her new house is smaller than her old one.

2,Peter is the tallest in my class.

3,The white dress is cheaper than the red one.

4,According to me,  Maths is more difficult than English.

5,Mary is the most intelligent in my group.

6,The Nile is the longest river in the world.

7,No mountain in the world is higher than Mount Everest.

8,She is the prettiest girl I've met.

9,That computer works worse than this computer.

10,Your bag is different from mine.

hok tốt~