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          He doesn’t know_______.
          A．to do whatB．to do howC．what to doD．how to do
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C

          試題分析：句意：他不知道做什么。Know后面接的是賓補從句，疑問詞后面用不定式，what to do做什么；故選C。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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