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          There are three libraries in our school, ______ were built five years ago. 

          A. all of them 
          B. either of them 
          C. all of which 
          D. both of that 
          			
          

			
          
				
          
		
		
	
          
		
          
			
          
				
          
				C				
          
			
          
			
          
				
          
			
          
			
          
				
          
			
          
			
          
				
          
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				相關(guān)習(xí)題
			
          	
						
          
			
          
				科目：高中英語(yǔ)
				來(lái)源：專(zhuān)項(xiàng)題
				題型：單選題
			
          
									
          There are three libraries in our school, ______ were built five years ago. 
          

          [     ]
          A. all of them 
          B. either of them 
          C. all of which 
          D. both of that 
          

			
          
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