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				17．--What's behind          door?  I can't open it．--Let me see．Oh, there is          chair．A．the, a         B．a  ,the         C．a, a           D．the, the			【查看更多】
			


		
           
          


		
          
		
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          一What's behind          door? I can't open it．   
          一Let me see．Oh,there's a chair．  
          A．aB．anC．the D．／
          

			
          
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          “What's behind ________ door? I can't open it.”
          

          “Let me see. Oh, there's a chair.”
          

          [　　]
          

          

          A．a
          B．an
          

          C．the
          D．不填
          

          

          

          

			
          
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