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				13．A．if            B．unless         C．because         D．though			【查看更多】
			


		
     
    


		
    
		
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    ________ it's difficult to make her dream come true, she never gives up
    

    

    [　　]
    

    A．

    Though
    

    

    B．

    Unless
    

    

    C．

    Because
    

    

    D．

    If
    

    

    

			
    
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    We can go hiking next week _________ it rains heavily．
    

    

    [　　]
    

    A．

    unless
    

    

    B．

    if
    

    

    C．

    though
    

    

    D．

    because
    

    

    

			
    
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    ________ I didn't understand the words, I knew what he wanted.
    

    [　　]
    

    

    A．Because
    B．Unless
    

    C．Even though
    D．If
    

    

    

    

			
    
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     ----Did you call Sara back ?
    


    ----I didn’t need to ,_____ we’ll have a
meeting together tonight.
    


    
 
    
  
  
    A．though .
    
      		
  
  
    B．unless
    
      		
  
  
    C．because
    
      		
  
  
    D．if
    
      		
 
    

    


     
    

			
    
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    ----May I go swimming this afternoon?
     ----I'm afraid not _______ you have finished your homework.
    A．unless B．because C．if  D．though 
    

			
    
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