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				13．--           do you go and visit your grandparents?--Once a week．A．How often       B．How much     C．How far       D．How long			【查看更多】
			


		
           
          


		
          
		
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          -- ________ do you go and visit your grandparents?
            
          --Once a week．
            
          A．How often           B．How much         C．How far        D．How long
          

			
          
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