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          --- Did you have a good time at Laura’s birthday party?
           --- Yes, indeed. It’s several years ________ I enjoyed myself so much.
          A．whenB．beforeC．sinceD．that
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          “It is + 一段時間 + since + 從句”意思是“自......發(fā)生以來已經(jīng)一段時間了”。如：it is three years since he died.(自)他去世以來已經(jīng)三年了�！癐t is + 一段時間 + before + 從句”意思是“過了一段時間...才發(fā)生”。如：It is 3 years before they accept the fact.過了三年他們才接受這個事實(shí)。故根據(jù)句意選C：這是幾年以來我才玩得如此開心。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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