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          While you _________ your trip, I was busy ________ for my exams.
           A. enjoyed, preparing       B. were enjoying, preparing   
          C. were enjoying, to prepare
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B
          當(dāng)你享受旅行時(shí)，我正忙于準(zhǔn)備考試。While當(dāng)。。。時(shí)，謂語(yǔ)通常用進(jìn)行時(shí)態(tài)；而be busy doing sth忙于做某事。所以選B。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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