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    精英家教网 > 高中英语 > 题目详情
    China's present environment situation is from bad to worse and if we _________ now to protect the environment, we’ll live to regret it.
    A．hadn’t actedB．haven’t actedC．don’t actD．won’t act
    C

    试题分析：句意：中国目前的环境状况越来越糟糕，如果我们现在不采取行动来保护环境，我们将会后悔。if引导的条件状语从句，主句为一般将来时态，if从句用一般现在时态，选C。
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