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				 --- I try to memorize new words every day, but can only remember few of them.    --- That’s not surprising. Newly – learnt words are easily forgotten unless frequently     in communication.    A. used     B. using     C. to use     D. be used			【查看更多】
			


		
           
          


		
          
		
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          一I try to memorize new words every day, but can only remember few of them．
            
          一That’s not surprising．Newly-learnt words are easily forgotten unless frequently _______ in communication．
            
          A．used                       B．using                C．to use                 D．be used
          

			
          
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