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				 A. stands       B. stood        C. stand       D. standing			【查看更多】
			


		
           
          


		
          
		
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          There is a dog ______  at the door．
          


          A．stand 
          


          B．stands  
          


          C．stood 
          


          D．standing
          

			
          
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          There used to be a house _____ on the top of the mountain. 
          

          [     ]
          A. standing 
          B. stands 
          C. stood 
          D. stand 
          

			
          
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           There  used to be a house    on the top of the mountain.
              
           A.  standing    B. stands   C. stood    D.  stand
              
          

			
          
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          The fence ____ near the window. 
          

          [     ]
          A. stand 
          B. is standing 
          C. have stood 
          D. stands 
          

			
          
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I noticed him ______ in the middle of the room.
           
[    ]
          
　　A. stands   B. stood   C. standing   D. to stand
          

			
          
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