6. Revision about unit 3

Write sentences using the comparative (young, old, tall, short, heavy, light, slim , fat,...) 

Write sentences using the superlative

 The Nile is the   in the world.

 Sahara is the   in the world.

 Russia is the   in the world.

 The great wall of China is the  wall in the world.

 Lake Victoria is the   in Africa.

Antarctica is the  place in the world.