The city is facing serious ............................ problems.

We believe that urban transport pods can travel ...........................  around 30kph.

Do you think the ...................... price will increase next month?

We will use more ............................. energy in the future.

A jet pack doesn’t ......................... a lot of space.

Which  ............................ of transport do you think will be used in the future?

We are looking for types of vehicles that help us to avoid ........................

The Segway, which is a ............................ vehicle, will be a success.

With the Segway, the driver pulls the handle to go back or pushes it to go ......................

I think we ........................ have electric taxis very soon.

With teleportation, you disappear at a place, and then ................................... in another place seconds later.

Every day over 1,000 new cars add to the city and the city of over 20 million people is getting more and more ......................

My brother and I often come to school ........................... foot.

Skycycling tubes will be easy ...............................

The white cat is Helen’s, and the black cat is ............................. .

We try to make the future green by using vehicles or kinds of energy that are ....................

This is Linda’s hat, and those shoes are ......................... .

It will be ........................ to ride a jet pack in bad weather because it doesn’t have a roof.

A sky safety system can help cars to ....................... traffic jams and crashes.