Special attention should be paid ________our earth from________.
A.to prevent;being polluted |
B.to prevent;polluting |
C.to preventing;being polluted |
D.to preventing;polluted |
推荐试卷
Special attention should be paid ________our earth from________.
A.to prevent;being polluted |
B.to prevent;polluting |
C.to preventing;being polluted |
D.to preventing;polluted |
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