Noise pollution was a problem before the ____ (close)of the

Noise pollution was 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 the Was noise pollution a problem before the _______(close) of t Was water pollution a problem before the (c )of the factory. Pollution problem和the problem of the pollution 区别 There was a terrible noise ____ the sudden burst of hight .A he pollution problem may be __one of the world today.A.the m There was a terrible noise( )the sudden burst of light. there was a terrible noise( ) the sudden burst of light____a there was a terrible noise( ) the sudden burst of light I was a little ____ before l gave my talk in front of the cl