The government has taken measuresair quality.A. to improveB. improvedC. being improvedD. t

发布时间：2020-08-17 05:24:52

The government has taken measures      air quality.
A. to improve
B. improved
C. being improved
D. to be improved

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(答案→)A. to improve
B. improved
C. being improved
D. to be improved
解析：考查不定式做目的状语：句意：为了改善空气质量，政府已经采取措施了。这里用不定式做目的状语，选A。
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