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				4．--Look.         dirty the water is!--Yes.we should really take some actions  to deal with it．A．what a        B．what         C．how         D．how a			【查看更多】
			


		
     
    


		
    
		
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    --Look，________ dirty the water is!
      
    --Yes，we should really take some actions to deal with it．
      
    A．what a         B．what         C．how          D．how a
    

			
    
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