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          Great changes _______ in our country since 1990.
          A．were taken placeB．took place
          C．have taken placeD．have been taken place
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          考查被動(dòng)語(yǔ)態(tài)和現(xiàn)在完成時(shí)。句意“自從1990年以來(lái)，我們國(guó)家復(fù)數(shù)了巨大的變化�！眛ake place沒(méi)有被動(dòng)形式，排除A、D；since+時(shí)間點(diǎn)常用于現(xiàn)在完成時(shí)。故選C。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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