第1个回答 2010-11-04
Measures should be adopted to prevent rivers being polluted by the paper mill.
第2个回答 2010-11-04
Measures should be taken to prevent paper mills from polluting the river~本回答被提问者采纳
第3个回答 2010-11-04
We should make measures to prevent the paper mill from polluting rivers.
第4个回答 2010-11-04
take measures to prevent the river from pollution by the paper mill