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				        happened to be no one in the building when the fire broke out.A. It        B. There       C. This        D. That			【查看更多】
			


		
           
          


		
          
		
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           _________ happened to be no one in the building when the fire broke out.
            
          A. It                    B. There                 C. This                   D.That 
          

			
          
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           _________ happened to be no one in the building when the fire broke out.
            
          A. It                  B. There               C. This                 D.That 
          

			
          
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                 happened to be no one in the building when
the fire broke out.
          


          A. It                              B.
There               
C. This                       D.
That
          


           
          

			
          
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                  happened
to be no one in the building when the fire broke out.
          


            A.
It          B. There         C.
This          D. That
          


           
          

			
          
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                   happened to be no one in the building when the fire broke out.
            
            A. It          B. There         C. This          D. That
          

			
          
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