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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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