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          There are _______students doing sports on the playground，_______?
            
          A．hundreds of; aren't they                    B．four hundred; are they
            
          C．hundreds; are there                        D．hundreds of ; aren't there
            
            
         
        
         			
          

			
          
				
          
		
		
	
          
		
          
			
          
				
          
				  
            
          1、D
            
            				
          
			
          
			
          
				
          
			
          
			
          
				
          
			
          
			
          
				
          
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          There are _______students doing sports on the playground，_______?
            
          A．hundreds of; aren't they                    B．four hundred; are they
            
          C．hundreds; are there                        D．hundreds of ; aren't there
          

			
          
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