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				 A. sing        B. singing       C. sings        D. sang			【查看更多】
			


		
           
          


		
          
		
          題目列表(包括答案和解析)
          

		
		
          

          


          
	
          				
          
									
          
I heard him ______ a song when I went into the room.
           
[    ]
          
　　A. sings   B. sang   C. singing   D. to sing
          

			
          
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          I heard him______ outside.
          


          
 
          
  
  
          A．sang
          
            		
  
  
          B．to sing
          
            		
  
  
          C．singing
          
            		
  
  
          D．sings
          
            		
 
          

          


           
          

			
          
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          My best friend is good at ________.
          


          A. sing              B.
sings                        C.
singing                D.
sang
          


           
          

			
          
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          I often heard her            in the room.
            
          A. sing           B. sang          C. singing         D. sings
          

			
          
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          Listen! I heard Tom______ in the next room.
          

          [     ]
          A. sing               
          B. sings             
          C. sang              
          D. singing
          

			
          
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