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           Echo _____ for half a month. She’ll come hack in two  months.
              
          A. left   B leave   C.  has left    D. has been away
              
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D
              
          解析:考查動詞時態(tài)。根據(jù)for half a month為一段時間，動詞得用延續(xù)性動詞，應用現(xiàn)在完成時態(tài)。同時句意：她將兩個月后回來。說明已經(jīng)離開。A和B排除，C不能與時間段連用。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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