we mustn't pollute rivers or cut down forests.we should try_

we mustn't pollute rivers or cut down forests.we should try_ We mustn't cut down forests 句型转化We ____ ____to cut down fore People mustn't cut down the forests. 1.We mustn't cut down so many trees!What a pity we can't see yes,we mustn,t put waste water into rivers or lakes的意思. We mustn't use the things ____(pollute) the environment. We mustn't cut down trees from now on.(改为祈使句) ___ -We shouldn't cut down too many trees,should we?-__.We shoul Most of us know we should cut down on fat,but knowing such t We should stop people from" "(cut)down trees. We should stop people from cuts down trees.为什么cut we mustn't put clothes on lamps or heaters 翻译