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				14．Few students can understand  the sentence until it      twice or three times．A．explains        B．is  explained       C．will be  explained  D．has  explained			【查看更多】
			


		
           
          


		
          
		
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          Few students can understand the sentence until it          twice or three times．
            
          A．explains               B．is explained             C．will be explained     D．has explained
          

			
          
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          Few students can understand the sentence until it ________ twice or three times．

          1. A.
            explains
          2. B.
            is explained
          3. C.
            will be explained
          4. D.
            has explained
          

			
          
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          Few students can understand the sentence until it ________twice or three times．
          

          

          [　　]
          

          A．explains
          

          

          B．is explained
          

          

          C．will be explained
          

          

          D．has explained
          

          

          

			
          
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          Few students can understand the sentence until it ________ twice or three times．
          

          

          [　　]
          

          A．explains
          

          

          B．is explained
          

          

          C．will be explained
          

          

          D．has explained
          

          

          

			
          
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