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				19．--What's the matter?--I am having trouble          who has taken my book．A．finding         B．looking for      C．finding out      D．looking up			【查看更多】
			


		
     
    


		
    
		
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    —What’s the matter?
      
    —I am having trouble     who has taken my book.
      
    A．finding             B．looking for       C．finding out       D．looking up
    

			
    
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    －What’s the matter?
    

    －I am having trouble ________ who has taken my book．
    

    

    [　　]
    

    A．finding
    

    

    B．looking for
    

    

    C．finding out
    

    

    D．looking up
    

    

    

			
    
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