I. Choose the correct answer.
11. People won’t use flying cars _________  the year 2050.
A. before    B. after         C. during    D. until
12. The city is facing serious_________ problems.
A. pollution B. polluted             C. pollute D. pollutant
13. We believe that urban transport pods can travel _________ around 30kph.
A. with B. at                                  C. in                                  D. on
14. Do you think the _________ price will increase next month?
A. fossil fuels B. gases          C. fuel                D. natural gases
15. We will use more _________ energy in the future.
A. solar B. sunny           C. sun                D. sunlight
16. A jet pack doesn’t _________ a lot of space.
A. have B. bring            C. take                              D. occur
17. Which _________ of transport do you think will be used in the future?
A. mean B. meaning       C. meanings                      D. means
18. We are looking for types of vehicles that help us to avoid_________ .
A. traffic B. traffic jam         C. rush hours                     D. walking
19. The Segway, which is a_________ vehicle, will be a success.
A. two-wheels   B. two wheels      C. Two wheel  D. two-wheeled
20. Which the Segway, the driver pulls the handle to go back or pushes it to go_________ .
A. forward B. backward          C. round                D. fly
21. I think we _________ have electric taxis very soon.
A. may B. might       C. will              D. would
22. With teleportation, you disappear at a place, and then_________ in another place seconds later.
A. appears B. appeared    C. reappear           D. reappears
23. 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
24. My brother and I often come to school_________ foot.
A. at B. in           C. by D. on
25. Skycycling tubes will be easy_________ .
A. drive B. to drive       C. ride                             D. to ride
26. The white cat is Helen’s, and the black cat is_________ .
A. my    B. I           C. mine                            D. of mine
27. 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
28. This is Linda’s hat, and those shoes are_________ .
A. her B. hers                               C. our                              D. their
29. 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
30. A sky safety system can help cars to_________ traffic jams and crashes.
A. prevent B. have       C. use                              D. take
<cần gấp lắm ạ>