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 centu

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
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