A Ferrari and a Porche are very expensive...
Cars.
How do you cross a river when there's no road?
By ferry.
When you have no transportation at all, you have to go...?
On foot.
What is very similar to the subway?
The train.
It's a small kind of transportation for just one person or two people.
It's a bicycle
It's a very big kind of transportation that goes in the water.
It's a ship.
How can you go to Manaus fast?
By plane.
It looks like a train, but it goes underground.
The subway (American English) or the tube (British English).
You can have about forty people inside this kind of transportation for the city.
It's a bus.