1 must take measures to control the water pollution. 2 now have been found to take these materials out of rubbish and to make use of the method. 3 someone suggested that the meeting be postponed to Monday. 4 from the well-known, natural light is actually made up of many colours. 5 our area and do a middle school. 6 in the earthquake, the soldiers had rescued 1200 people. 7 north China was hit by an unexpected heavy rain attacks, which caused severe flooding.
参考资料:360翻译 希望采纳