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				10．The famous musician started           music          the age of seven．A．write.at       B．writing.in     C．to write.in      D．writing.at			【查看更多】
			


		
     
    


		
    
		
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    The famous musician started ________ music ________ the age of seven．
      
    A．write，at               B．writing，in            C．to write，in            D．writing，at
    

			
    
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