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          The students needs _____ their room by themselves. 

          A. clean 
          B. cleaned 
          C. cleans 
          D. to clean 
          			
          

			
          
				
          
		
		
	
          
		
          
			
          
				
          
				D				
          
			
          
			
          
				
          
			
          
			
          
				
          
			
          
			
          
				
          
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