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          ---Why do you look so worried?
          ---I’m expecting a call from my son. He              London for three days.
          A．has been toB．has been in
          C．has gone to  D．has come in
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B

          試題分析：句意：你為什么看起來這么焦慮？我在期盼著兒子打來的電話。他去倫敦三天了。句中有表示一段時間的短語for three days，所以謂語動詞必須是延續(xù)性動詞，故選B。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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