Directions: This question presents a sentence, all or part of which is underlined. Beneath the sentence you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others. The greater the number of cars on the road, and the greater the emission of exhaust gases, greater is the amount of pollution in the atmosphere.