Different Kinds of Transport

a taxi. In the sky there is a plane, On the rails

, and

van, a double-decker bus, an airship, a helicopter, a spaceship,

car, a car with a bicycle ex.: I think travelling by

boring
dangerous
cheap
expensive
interesting
fast
slow

safe
good
bad
noisy
quiet
clean
comfortable

of transport do you prefer? Why?
Example:
I prefer travelling by

many airports are there in London? 3. What kind of