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          It is very kind _____ you to help me with my lessons because it is very difficult _____me to learn them well.
          A．of； forB．of； ofC．for；ofD．for； for
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A
          考查句型：It is +形容詞+介詞+sb to do的用法。形容詞為形容人的性格品質(zhì)的詞，應(yīng)用介詞of,形容詞為difficult,necessary等詞時(shí)，應(yīng)用介詞for 。所以選A。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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