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				44．A． how            B．where         C．when         D．what			【查看更多】
			


		
           
          


		
          
		
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          At first, we didn’t know _______to do.
          A．how B．where C．when D．what
          

			
          
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          At first, we didn’t know _______to do.
          


          A．how              B．where            C．when             D．what
          


           
          

			
          
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          At first, we didn’t know _______to do.
          A．how B．where C．when D．what
          

			
          
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          -- _________was your summer vacation?
            
          --It was pretty good.
            
          A．How         B．Where         C．When          D．what
          

			
          
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          ________ do they sell there?
          

          [　　]
          

          

          A．How 
          B．What
          

          C．When 
          D．Where
          

          

          

          

			
          
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