题目内容
20．If people still don't care enough for the environment，the air will become muchworse．（bad）分析 如果人们还不足够关注环境，空气将会变得更糟．
解答 答案：worse．根据句意如果人们还不足够关注环境，空气将会变得更糟，这里是将将来的空气和现在的空气作比较，用比较级，much在这修饰比较级表程度，bad的比较级是worse，故答案是worse
点评 一些不规则单词的比较级和最高级需要牢记．
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