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          You must apply yourself_______ the study you have to take up.
          A．onB．forC．toD．of
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          考查介詞。On在某方面；for 為了；to到；of……的。句意：你必須讓你自己投入到你不得不從事的學(xué)習(xí)中去。Apply oneself to sth專心致志于某事，故選C。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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