Choose the correct answer.

1. People won’t use flying cars _____________the year 2050.

A. before                     B. after                               C. during                   D. until

2. The city is facing serious _____________ problems.

A. pollution                B. polluted                         C. pollute                   D. pollutant

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

A. with                        B. at                                   C. in                           D. on

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

A. fossil fuels             B. gases                             C. fuel                        D. natural gases

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

A. solar                       B. sunny                            C. sun                        D. sunlight

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

A. have                       B. bring                             C. take                       D. occur

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

A. mean                      B. meaning                        C. meanings               D. means

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

A. traffic                     B. traffic jams                   C. rush hours             D. walking

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

A. two-wheels            B. two wheels                    C. two wheel             D. two-wheeled

10. With the Seg way, the driver pulls the handle to go back or pushes it to go _________.

A. forward                  B. backward                       C. round                     D. fly

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

A. may                        B. might                             C. will                        D. would

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

A. appears                   . B. appeared                      C. reappear                D. reappears

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

A. expensive               B. famous                          C. difficult                 D. gridlocked

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

A. at                            B. in                                   C. by                          D. on

15. Skycycling tubes will be easy ___________.                                  

A. drive                       B. to drive                          C. ride                        D. to ride

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

A. my                          B. I                                     C. mine                      D. of mine

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

A. environmentally friendly                                  B. environment friendly

C. environmentally friendship                              D. environmental friendly

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

A. her                          B. hers                               C. our                         D. their

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

A. enjoyable               B. pleasant                         C. unpleasant             D. comfortable

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

A. prevent                   B. have                               C. use                         D. take