11. People won't use flying cars. B. after A. pollution the most serious problem? B. polluted 13. We believe that urban transport pods can travel A. with B. at G. in price will increase next month? C. fuel energy in the future. C. sun A. before 12. Is 14. Do you think the A. fossil fuels 15. We will use more A. solar 16. A jet pack doesn't A. have 17. Which B. gases B. sunny the year 2050. 19. The Segway, which is a A. two-wheels a lot of space. C. during C. pollute D. until D. pollutant around 30kph. D. on D. natural gases D. sunlight B. bring C. take of transport do you think will be used in the future? B. meaning C. meanings 18. We are looking for types of vehicles that help us to avoid A. mean A. traffic B. traffic jams C. rush hours D. occur D. means D. walking vehicle, will be a success. C. two wheel B. two wheels 20. With the Segway, the driver pulls the handle to go back or pushes it to go A. forward B. backward C. round D. fly ercise 3 Complete tho D. two-wheel to the first (1)