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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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