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          --How does Jack usually go to school?  
          --He_____________ride a bike, but now he_______________there to lose weight.
          A．used to, is used to walkB．was used to, is used to walking
          C．was used to, is used to walkD．used to, is used to walking
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D
           本題的含義是他曾經(jīng)習(xí)慣于騎自行車，但是現(xiàn)在他習(xí)慣于步行，used to+動詞原形，表示曾今的含義，be used to doing表示目前習(xí)慣于做某事，故本題選D。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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