Give the correct form of the words in the brackets

Tast V. Give the correct form of the words in the brackets.
 
1. Cars are _________(big) than motorbikes.
 
2. Planes are _______________(expensive) than buses.
 
3. Ships are __________(slow) than planes.
 
4. Motorbikes are __________(small) than lorries.
 
5. City life is ___________(busy) than country life.
 
6. Trains are ______________(fast) than bicycles.