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				9．Although not  too many people           A/H1N1 in  the world so far.we had better  not go to the crowds．A．caught                  B．has caughtC．have caught                D．have been caught			【查看更多】
			


		
           
          


		
          
		
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          Although not too many people _________ A/H1N1 in the world so far，we had better not go to the crowds．
            
          A．caught                           B．has caught
            
          C．have caught                       D．have been caught
          

			
          
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