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              you         Chicago?
          A. Are; visit          B. Are; visited      C. Did; visit
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C

          試題分析：句意：你參觀過(guò)芝加哥嗎？be動(dòng)詞和動(dòng)詞連用只有兩種形式，一是be動(dòng)詞+現(xiàn)在分詞，而是be動(dòng)詞+過(guò)去分詞。本句中參觀的動(dòng)作和句子主語(yǔ)是主動(dòng)關(guān)系，故只能選C。
          點(diǎn)評(píng)：英語(yǔ)每種時(shí)態(tài)都有比較固定的句子結(jié)構(gòu)，熟記這些基本的結(jié)構(gòu)是學(xué)好英語(yǔ)的關(guān)鍵。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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