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          The windows must _________ before you leave the room.
          A．be closed B．a(chǎn)re closedC．close D．be close
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A
          考察時態(tài)。句意：在你離開房間之前，不許關(guān)上窗戶。結(jié)合語境可知本句主語為動作對象，故用被動語態(tài)。選A。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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