A. VERY B. TOO C. AS D. SOB. READ THE PASSAGE AND FILL IN EACH BLA...

15. A. very B. too C. as D. soB. Read the passage and fill in each blank space with ONE appropriate word: Water pollution, contamination of streams, lakes, underground water, bays, or oceans bysubstances, is harmful (1)___________________living things.Water is necessary to life on (2)___________________. All organisms contain it;(3)___________________live in it; some drink it. Plants and animals require water(4)___________________is moderately pure, and they cannot survive if their water is(5)___________________with toxic chemicals or harmful micro-organisms. If severe, water pollution cankill large (6)___________________of fish, birds, and (7)___________________ animals. In some cases itmay kill all members of a (8)_____________________in an affected area. Pollution makes streams, lakes,and coastal waters (9)____________________to look at, to smell, and to (10)__________________in.Fish and shellfish harvested from polluted waters (11)__________________be unsafe to eat. People whouse polluted water can (12)__________________ill, and, with prolonged exposure, may develop cancersor have (13)__________________with birth defects. The major water (14)___________________arechemical, biological, or physical materials that degrade (15)___________________quality to the highestdegree.III. vocabulary and grammarA. Choose the best answer.