Wastewater from factories polluted the river为什么用polluted

Wastewater from factories polluted the river为什么用polluted the polluting river 和 the polluted river哪个正确?为什么? 从句变分词：the water was from the river which had been polluted b ___be done to stop the river from being polluted .A.what do – Do you know why the river was polluted? Little___done to prevent the air from being polluted. this is _____the river was polluted the poison in the waste polluted the river and the water _(p The project to clear up the polluted river()by the end of ne The water in the river is polluted .Tom（）catch any fish in i Can you imagine what you can see in the polluted river?怎么回答 The river is so seriously polluted that few fish,_____,can b