I- Circle the best answer (A, B, C, or D) to complete the sentences. (1.0 pt) 1. Computer is one of the most important _____________ of the 20th century. A. inventing B. inventories C. inventions D. inventors 2. Scientists say that if people see a UFO, it _______________be a spacecraft. A. will B. might C. have to D. can 3. Astronauts use __________________ to move around when they are on the Moon’s surface. A. spaceships B. flying saucers C. space cars D. space buggies 4. Eating too much sugar can__________________ to health problems. A. lead B. result C. make D. cause 5. The heavy rain caused _______________in many parts of the country. A. droughts B. floods C. storms D. earthquake 6. People who cannot hear nor speak often communicate using __________________. A. signs B. pictures C. sounds D. codes 7. Emergency teams are still clearing the ______________ from the plane crash. A. waste B. dust C. piece D. debris 8. Trees can’t grow here because the soil is too______________. A. pollute B. polluting C. polluted D. pollution 9. Too much use of electric lights in the cities may cause ______________. A. air pollution B. light pollution C. soil pollution D. visual pollution 10. Do you think there _________ less conflict in the world if all people ________ the same language? A. would be/ spoke B. will be/ spoke C. were/ would speak D. would be/ speak mik cần gấp nhoa!!!! ai làm mik vote 5 sao nhoa!!!