the ice was cut from frozen rivers or lakes,为什么修饰rivers or l

We went to swim in the rivers or lakes because the weather w yes,we mustn,t put waste water into rivers or lakes的意思. I don't think waste water should be put into the rivers or l 说明理由 1._______ we use comes from the rivers,lakes and the at Most of the water we use c____ from rivers,lakes and the atm But much of the world’s water ____ from rivers and lakes. there is ___water from ___other lakes and rivers.(many) we mustn't pollute rivers or cut down forests.we should try_ Water ______ in seas, rivers and lakes. Many rivers and lakes are now dead The water in the lakes and rivers in Yunnan be-came______bec The water in the lakes and rivers in yunnan became ______bec