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          The math problem is so hard. I really don’t know    .
          A．how to do itB．how to doC．what to do itD．where to do it
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A

          試題分析：how如何，怎樣；what什么；where在哪兒。句意：這道數(shù)學(xué)題是這么難。我真的不知道如何解答。選項(xiàng)B缺少邏輯賓語，結(jié)合語境可知選A。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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