Was water pollution a problem before the (c )of the factory.

Was water pollution a problem before the (c )of the factory. Noise pollution was a problem before the ____ (close)of the Was noise pollution a problem before the _____(close)of the 急、英语 Noise pollution was a problem before the ____ (close)of Was noise pollution a problem before the _______(close) of t sat 找错误The problem of water pollution,frequently compounded( Pollution problem和the problem of the pollution 区别 This factory is to blame for water pollution of the rivers.这 Factory-a leading cause of the air pollution翻译是‘工厂--造成空气污染的罪 he pollution problem may be __one of the world today.A.the m People ( ) a general understanding of the water problem. People (?) a general understanding of the water problem