Choose the correct option A, B, C or D to complete the sentences. 1. Solar energy __________ by many countries in the world in the future. A. use B. will use C. will be using D. will be used 2. __________ is a renewable sourse. A. Coal B. Oil C. Wind D. Gas 3. You can wear a __________ on your back to fly anywhere easily in the future. A. jet pack B. flying car C. teleporter D.high-speed bicycle 4. In the future most people will travel __________ flying train. A. in B. at C. on D. at 5. Do you think we __________ driverless car in the future? A. use B. to use C. will use D. have used 6. That picture is __________ A. us B. ours C. our D. we 7. ___________ is a single-wheel bike. A. Monowheel B. Hover scooter C. Segwey D. Teleporter 8. Nuclear energy can provide electricity for the world needs, but it is __________ A. cheap B. unlimited C. dangerous D. safe 9. You can ___________easily on the Dead Sea. Why? – Because it’s so salty A. fly B. walk C. drive D. float 10. Biogas helps solve the problem of indoor ___________. A. noise pollution B. air pollution C. water pollution D. soil pollution