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				27．It’s impolite for you           the teahouse without             goodbye to your friends．  A．leaving.say B．leaving.to say C．to leave.saying D．to leave.to say			【查看更多】
			


		
     
    


		
    
		
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    It's impolite for you ________ the teahouse without ________ goodbye to your friends．
      
    A．leaving，say           B．to leave，saying         C．leaving，to say      D．to leave，to say
    

			
    
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