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				  When and where this took place     still unknown.  a. has     b. is     c. were    d. are			【查看更多】
			


		
           
          


		
          
		
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          When and where this took place_________still unknown.
            
           A．a(chǎn)re   B．were  C．is   D．has
          

			
          
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          When and where this took place _____ still unknown.
          


          A. is                              B.
has                                    C.
were                                 D.
are
          


           
          

			
          
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           When and where this took  place _____ still unknown.
              
          A. is                         B.  has                         C.  were                       D.  are
              
          

			
          
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          When and where this took
place               
still unknown.
          


          　　      
          


          
 
          
  
  
          A．a(chǎn)re
          
            		
  
  
          B．were
          
            		
  
  
          C．is
          
            		
  
  
          D．has
          
            		
 
          

          


          　　   　　   
          

			
          
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