（） the city.s environment（环境） has become of great importance._精华吧

（） the city.s environment（环境） has become of great importance.

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（） the city.s environment（环境） has become of great importance.

A.The improving

B.Improving of

C.Improving

D.Being improved

正确答案：C

Tag：大学英语环境时间：2024-01-17 21:27:21

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