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				 ―         have you learned to play the guitar?   ―For three years.     A. How long     B.  How often     C.  How soon     D.  How much			【查看更多】
			


		
     
    


		
    
		
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    —_______  have you learned to play the guitar?             
    —For three years.            
    

    [     ]
    A. How long              
    B. How often             
    C. How soon             
    D. How much 
    

			
    
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