*Choose the most suitable answer from the four options marked A, B, C, or D to complete each of the numbered gaps in the passage below. Write your ans

*Choose the most suitable answer from the four options marked A, B, C, or D to complete each of the numbered gaps in the passage below. Write your answers on the answer sheet.
More than two hundred years ago, the term “environmental pollution” was quite strange to people. They lived healthily, drank (1)___ water, and breathed fresh air. In those days, industry was not well-developed. Nowadays, the (2)___ is quite different. The world today is faced with many (3).___ threats. The most dangerous threat of all is war, and after the threat of war is (4)___. People all over the world are worried about things that are happening to the environment. Actually it is man that is (5)___ the surroundings with many kinds of wastes from the devices that make human lives more comfortable and convenient. Everybody knows that cars emit dangerous gases that cause poisonous (6)___ and cancer, but no one wants to travel on foot or by bicycles. Manufactures know that (7)___ from factories make water and (8)___ polluted, but they do not want to spend a lot of their money on (9) ___ the wastes safely. (10)___ rubbish is bad for our health, but .no one wants to spend time burying it. Is it worth talking a lot about pollution?
1.A. fresh B. pure C. clean D. boiled
2. A. situation B. case C. circumstance D. occasion
3. A.. chief B. significant C. major D. main
4. A. contamination B. pollution C. dirtying D. poisoning
5. A. poisoning B. destroying C. dirtying D. contaminating
6. A. steam B. vapor C. air D. moisture
7. A. wastes B. junks C. garbage D. litters
8. A. land B. ground C. soil D. earth
9. A. solving B. dealing C. processing D. treating
10. A. Throwing B. Scattering C. Distributing D. Pouring
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