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				 Mr.  Black        us English since he came here in 1990.   A. is teaching     B.  taught              C.  teaches       D.  has taught			【查看更多】
			


		
     
    


		
    
		
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    Mr．Black ________ us English since he came here in 1990
    

    

    [　　]
    

    A．is teaching
    

    

    B．taught
    

    

    C．teaches
    

    

    D．has taught
    

    

    

			
    
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