The USA is the most exciting country in the worf 

-> so sánh nhất 

English is the most difficult subject in school 

-> so sánh nhất 

3 It is cheaper to go by train than by car

-> so sánh hơn

4

Motorbike is better and more comfortable than bicycle 

-> so sánh hơn 

5 august is the best month to  go climb in Mount fuji 

-> so sánh nhất 

6 Polar bears are the largest predators on the land 

-> so sánh nhất 

7 life in big citties are nosier than life in country 

-> so sánh hơn 

8 gatwick is father from my house than heathrow

-> so sánh hơn 

9 neptune is the furthest planet in the sun 

10 Killer whales is bigger and fasster than great white sharks.

-> so sánh hơn