10. Solar energy will ________ to solve the problem of energy shortage. A. use B. be used C. used D. using 11. We believe that urban transport pods can travel around 30kph. A. with B. at C. in D. on 12.__________ the traffic was bad, I arrived on time. A. Despite B. In spite of C. However D. Although 13. It takes me two hours___________ that letter. A. to write B. write C. writing D. for writing 14. I’m tired of ______ nothing to do at home. A. to have B. have C. having D. had 15. Please tell him to __________ the light. It is getting dark. A. turn on B. turn up C. turn over D. turn off 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. We will use more energy in the future.