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				34．---           have you been teaching in this  school.  ---Since 1990. A．How long     B．How soon      C．How far     D．How many			【查看更多】
			


		
           
          


		
          
		
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          ---___________have you been teaching in this school. 
            
          ---Since 1990.
            
          A．How long          B．How soon            C．How far          D．How many
          

			
          
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