Nowthe air in our city is ____than it used to be

题目

Nowthe air in our city is ____than it used to be
我知道填even worse可是是为什么呢?

答案

even worse
than 比,是比较级的标志,even 修饰比较级worse.
翻译：现在,我们城市的空气比过去差得多了.