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				  This is        key and that is       umbrella.A.  an, a        B.  a, an        C.  a, a             D.  an, an			【查看更多】
			


		
           
          


		
          
		
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          This is ______ key, and that is ________
orange. 
          


          A. a;
a              
B. a; an         C. an;
an           
          


           
          

			
          
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          This is         key
and that is           eraser.
          


                       A.
a, a     B. a, an       C.
an, a       D. the, an
          


           
          

			
          
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          This is _____ key and that is _____ English book.
          

          [     ]
          A. a; a  
          B. an; an  
          C. a; an  
          D. an; a
          

			
          
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          This is ______ key, and that is ________ orange. 
          A. a; a               B. a; an         C. an; an          
          

			
          
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          This is ______ key and that is ______ eraser.
          

          [     ]
          A. a, a 
          B. a, an 
          C. an, a 
          D. the, an 
          

			
          
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