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				17．How long are they planning  to stay there?      two weeks. A．For         B．Of          C．On         D．With			【查看更多】
			


		
           
          


		
          
		
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          --How long are they planning to stay there? 
            
          --____ two weeks. 
            
          A．For                 B．Of                   C．On                 D．With
          

			
          
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          How long are they planning to stay there? ____ two weeks. 
              
          A．For                  B．Of                   C．On                 D．With 
              
          

			
          
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