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				9．Though they are twins.they do everything         .			【查看更多】
			


		
           
          


		
          
		
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           _______ they are twin brothers, they
don’t look like each other.
          


          A.
Though          B. Since                   C.
However           D.
When     
          


           
          

			
          
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          ______they are twin sisters, they don t look like each other.              
          

          [     ]
          A. Because           
          B. Since           
          C. Though     
          D. However
          

			
          
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          ______ they are twin brothers, they don’t look like each other.
            
          A．Though               B．Since               C．However         D．When
          

			
          
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          ______ they are twin sisters, they don’t  look like each other.
              
          A. Because B. Since C. Though D. However
              
          

			
          
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          ______ they are twin sisters, they don't look like each other. 
          

          [     ]
          A. Because 
          B. Since 
          C. Though 
          D. However 
          

			
          
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