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          “ Don’t give up, keep ______, and you ’ll pass the exam.” said the teacher.
            
          A. study hard                          B. studying hard         C. on study hard
            
            
         
        
         			
          

			
          
				
          
		
		
	
          
		
          
			
          
				
          
				  
            
          1、B
            
            				
          
			
          
			
          
				
          
			
          
			
          
				
          
			
          
			
          
				
          
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          “ Don’t give up, keep ______, and you ’ll pass the exam.” said the teacher.
            
          A. study hard                          B. studying hard         C. on study hard
          

			
          
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