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


		
           
          


		
          
		
          題目列表(包括答案和解析)
          

		
		
          

          


          
	
          				
          
									
          

          ________ 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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