We are confident that the environment by our further efforts to reduce pollution.A. had been improved B. will be improvedC. is improved D. was improved 题目和参考答案——青夏教育精英家教网—

题目内容

We are confident that the environment ______ by our further efforts to reduce pollution.

A. had been improved B. will be improved

C. is improved D. was improved

【解析】考查动词时态。根据语境：我们充满信心…。证明此事还未发生，故使用一般将来时态，答案选B。

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