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If we had taken such effective measures much earlier, the fiver so seriously now

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If we had taken such effective measures much earlier, the fiver so seriously now

29．If we had taken such effective measures much earlier, the fiver__________so seriously now.

    A．is not polluted                                  B．would not be polluted

C．had not been polluted                          D．would not have been polluted

试题答案

B

标签：measureseffectivemuchtheearlier

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