Write comparative sentences: 1) London / Edinburgh (big); 2) Cheetahs / elephants (fast); 3) The Amazon / the Danube (long); 4) The Arctic / Iceland (cold); 5) Sharks / dolphins (dangerous); 6) Hawaii / Alaska (warm); 7) Hotels / youth hostels (expensive).
- London is bigger than Edinburgh.
- Cheetahs are faster than elephants.
- The Amazon is longer than the Danube.
- The Arctic is colder than Iceland.
- Sharks are more dangerous than dolphins.
- Hawaii is warmer than Alaska.
- Hotels are more expensive than youth hostels.