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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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