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				(  ) You should understand the traffic rule by now.    You've had it      often enough.     A. explaining  B. to explain    C. explain  D. explained    [解析]選D 本題考查非謂語動詞充當(dāng)賓語補足語  的用法.在have sth. done結(jié)構(gòu)中."done"與sth. 含有被  動關(guān)系.在本題中.the traffic rule與explain有被動關(guān)系.  因此.選D.			【查看更多】
			


		
           
          


		
          
		
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          (2005·天津)
          

          You should understand the traffic rule by now. You've had it ________ often enough.
          

          [　　]
          

          

          A．explaining
          B．to explain
          

          C．explain
          D．explained
          

          

          

          

			
          
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