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				29．My father bought me a MP4.but I don’t know        it． A．when to use B what to  use  C．where to use  D．how to use			【查看更多】
			


		
     
    


		
    
		
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    My father bought me a MP4，but I don’t know ________ it．
      
    A．when to use           B．what to use            C．where to use          D．how to use
    

			
    
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    My father bought me a MP4，but I don’t know ________ it．
      
    A．when to use            B．what to use             C．where to use           D．how to use
    

			
    
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