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          ----- Why is Mr . Yang still in the teachers’office ?
          ---- Maybe he _______ his work yet .
          A．doesn’t finish B．hasn’t finished 
          C．haven’t finished D．won’t finish 
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B
          

          解析試題分析：句意：為什么楊先生還在辦公室？也許他還沒(méi)有完成他的工作呢。由yet可知該用現(xiàn)在完成時(shí)，所以選B。
          考點(diǎn)：考查動(dòng)詞時(shí)態(tài)。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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