题目内容
The air in Beijing is getting much ______ now than a few years ago.
A.clean | B.cleaner | C.cleanest | D.the cleanest |
B
句中有than要用比较级。北京现在的空气比几年前干净多了。
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题目内容
A.clean | B.cleaner | C.cleanest | D.the cleanest |