【題目】If more people give up driving cars, the air will get much ______ in a few years.
A.clean
B.cleaner
C.the cleaner
D.the cleanest

【答案】B
【解析】如果更多的人放棄開車,在幾年后空氣將會變得更清潔。表示與現(xiàn)在相比,用比較級。注意比較級前不用冠詞,最高級前用the。故選B。

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