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Itishightimethatwetookstrongmeasurestopreventwaterpollu...

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問題詳情:

Itishightimethatwetookstrongmeasurestopreventwaterpollu...

It is high time that we took strong measures to prevent water pollution __________a healthy life.

   ng         d                     live

【回答】

D

知識點:非謂語動詞

題型:選擇題

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