Travelling

Since ancient times people ___ of flying in the sky.

At first people ___ in a hot air balloon.

It ___ a great victory.

In the 20th century aeroplanes ___.

The first aeroplanes were small and ___ very far.

Nowadays the engineers ___ very big planes.

Modern planes ___ a long distance and ___ passengers from one place to another.

It ___ them much time.

For example, travelling to England ___ for three and a half hours.

And you can ___ the USA in ten hours.

People who travel by plane ___ at the airport.

A traveller has to come two hours earlier to the airport if he ___ to miss the plane.