III. Fill in each blank with a suitable word from the box. high-speed harmful density slums eco-friendly flying renewable populated 1. Solar power is ______________ because it doesn't harm the environment. 2. It is predicted that ______________ will be a popular means of transport by 2050. 3. Journey times have been reduced considerably thanks to _____________ trains. 4. Manila is the most densely _______________ city in the world. 5. The United States' population _____________ is 13.5 people per square mile. 6. People living in _____________ lack basic services such as clean water and sanitation. 7. When fossil fuels are burned, they release carbon dioxide and other gases that are ____________ to the environment. 8. Will ____________ energy replace fossil fuels within 30 years? IV. Choose the best answer a, b, c or d to complete the sentence. 1. The monowheel looks futuristic, but it can fall ______ very easily a. up b. down c. over d. out 2. Natural gas is limited and it is harmful ______ the environment a. for b. in c. with d. to 3. If you turn off the light when you leave the room, you'll use _____ energy. a. fewer b. less c. more d. most 4. I didn't have my mobile, so Peter lent me _____. a. mine b. his c. their d. hers 5. I'd prefer to have a _____ that can take me to another place in seconds. a.teleporter b. monowheel c. hover scooter d. flying car 6. You have never heard about teleportation, _____? a. do you b. don't you c. have you d. haven't you 7. With a solar PV system, solar panels _____ sunlight right into electricity. a.create b. generate c. provide d. convert 8. Self-driving cars are expected to be _____ than human-driven ones. a. more safely b. less safe c. more safer d. much safer 9. Mumbai is land of some of the world's richest people. _____, it is also home to the world's poorest. a. Although b. Therefore c. However d. Despite 10. "Should I use public transport or a bike to reduce carbon dioxide?" “_________” a. Of course. It helps to reduce your carbon footprint, you know. b. Why not? It will harm the environment. c. I won't advise you to do so. d. How about taking your car? V. Write the correct form or tense of the verbs in brackets. 1. In 2017, they ____________ (install) solar panels to provide heat for their hot water. 2. I ____________ (visit) Rio de Janeiro twice so far. It's very diverse! 3. Tomorrow at 8p.m James ____________ (watch) a film on Netflix. 4. I think that driverless cars ____________ (use) widely in the next two decades. 5. Overcrowding ____________ (cause) huge problems such as housing, congestion, unemployment and air pollution. 6. Look, Janet! The boy over there ____________ (ride) a Segway. 7. Since 1990, the population of the city ____________ (grow) by 110,000 people 8. Hoi Mua Festival ____________ (hold) every March to thank the God for the crop. 9. My father installed glass in the windows to stop heat ____________ (escape) 10. I'd prefer ____________ (have) a hoverboard, so that I can fly to school! VI. Supply the correct form of the words in brackets. 1. The slums are often ____________, with many people crammed into very small living spaces. (crowd) 2. Most _____________ energy sources are fossil fuels such as coal, petroleum, and natural gas. (renew) 3. Dean Kamen is an ____________ of the Segway scooter. (invent). 4. _______________ is about not having enough money to meet basic needs. (poor) 5. _______________ materials can be processed and used again. (recycle) 6. By 2035, the world's population will _____________ 50% more energy. (consumption) 7. New York is one of the most _______________ diverse cities in the world. (culture) 8. Children tend to be more _____________ than adults. (imagine) VII. Each sentence has a mistake. Find and correct it. 1. The fewer furniture that you have in your bedroom, the bigger it will look. 2. Renewable energy is a practical solution of our electricity needs. 3. By increasing renewable energy, we can reduce air pollution and cutting global warming emissions. 4. In six years' time, we will be travelled across town by flying taxi. 5. People from the countryside move to city to find work and a better standard of living. 6. When you were a child, you used to go to school on foot, weren't you? 7. Friday night, a friend of our from college came up to see us. 8. Another Japanese city, Osaka, also has a very large population with 20.5 million. Hơi dài các bạn chịu khó giúp mk vs nhé!