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          Great changes______ in the city since1970.
          A．have been taken placeB．have taken place.
          C．has taken placeD．took place
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B

          試題分析：句意：自從1970年，在這座城市里發(fā)生了很大的變化。分析從時(shí)間上體現(xiàn)了現(xiàn)在完成時(shí)，主語(yǔ)又是復(fù)數(shù)形式，因此用take place發(fā)生，現(xiàn)在完成時(shí)形式。故選B
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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