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				21．During the summer of 2007.Betty spent two weeks        some  famous novels for children． A．read     B．reading     C．to read         D．on reading			【查看更多】
			


		
     
    


		
    
		
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    During the summer of 2007，Betty spent two weeks ______ some famous novels for children．
      
    A．read         B．reading             C．to read             D．on reading
    

			
    
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