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				 It is difficult for us to  learn a lesson in life       we’ve actually had that lesson.    A. when          B.  after           C.  since      D. until			【查看更多】
			


		
     
    


		
    
		
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    It is difficult for us to learn a lesson in life __________ we've actually had that lesson.
    

    [     ]
    A. when
    B. after
    C. since
    D. until
    

			
    
				查看答案和解析>>
			
    
		
    
				
    
									
    It is difficult for us to learn a lesson in life _____ we've actually had that lesson.
    

    [     ]
    A. when 
    B. after 
    C. since
    D. until
    

			
    
				查看答案和解析>>
			
    
		
    
				
    
									
    It is difficult for us to learn a lesson in life ______ we've actually had that lesson.
    

    [     ]
    A. when
    B. after 
    C. since
    D. until 
    

			
    
				查看答案和解析>>
			
    
		
    
				
    
									
    It is difficult for us to learn a lesson in life______ we’ve actually had that lesson.
      
    A. when                   B. after                   C. since            D. until
    

			
    
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    It is difficult for us to learn a lesson in life _____we’ve  actually had that lesson．
        
    A．when           B．a(chǎn)fter          C．until             D．since
        
    

			
    
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