It's known to us_______there is pollution,there is harm.

It's known to us_______there is pollution,there is harm. It is known to as ___there is pollution ,there is harm. It is known to us ___ where is pollution there is harm. As is known to all,___ there is pollution ,there is harm.A.w It is known to us all_ _ _ _ _there is harm.哪儿有污染 pollution is (harm) to 中间用什么形式 lt is known that smoking does great ----[harm]to us. it is known to us It's known to us that practice makes perfect.与As is known to 【急】Noise pollution is doing much harm to our health now.Nois 英语翻译Noise pollution is doing much harm to our health now．Noi Noise pollution is doing much harm to our health now谢谢了,