15、We must ________measures to protect our earth from ________.
A.do;being polluted B.get;polluted
C.take;being polluted D.have;polluted
科目:高中英語 來源: 題型:
We must ________measures to protect our earth from ________.
A.do;being polluted B.get;polluted
C.take;being polluted D.have;polluted
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