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          –Have you ever _______ to Singapore?
          –No, never.
          A．a(chǎn)reB．wereC．wasD．been
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D
          本題考查的現(xiàn)在完成時(shí)結(jié)構(gòu)：根據(jù)句子助動(dòng)詞have可知本句為現(xiàn)在完成時(shí)態(tài)，故謂語(yǔ)動(dòng)詞要用be的過(guò)去分詞。故選D。主語(yǔ)+have或has done+其他，只有D符合題意。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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