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				 Last term our maths teacher set so difficult an examination problem       none of us worked out.     A. that     B. as       C. so that     D. which			【查看更多】
			


		
     
    


		
    
		
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     Last term our maths teacher set so difficult an examination problem _____ none of us worked it out.  
      
    A. that    B. as    C. so that    D. which 
    

			
    
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    Last term our maths teacher set so difficult an examination problem _____ none of us worked out.
      
    　 A. that 　 B. as    C. so that 　 D. which
    

			
    
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     Last term our maths teacher set so difficult an examination problem _____ none of us worked out.
      
    　 A. that 　 B. as   C. so that 　 D. which
    

			
    
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    Last term our maths teacher set so difficult an
examination problem ______none of us worked out.
    


    A. that      B.
as     C. so that     D. which 
    


     
    

			
    
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    Last term our maths teacher set so difficult an examination problem _____ none of us worked out.
      
    A. that 　 B. as 　 C. so that 　 D. which
        
     
    

			
    
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