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				21．What did you do              your  vacation           month?．  A．on,last       B．on,next       C．for,last			【查看更多】
			


		
           
          


		
          
		
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          －What did you do ________ your last day
off?
          


               －I took my dog _______ a walk. 
          


          A. in; for              B.
on; for          C. on; as           D.
at; on
          


           
          

			
          
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          ---What did you do ______ your last day off?
          ---I took my dog ______ a walk.

          1. A.
            in; for
          2. B.
            on; for
          3. C.
            on; as
          4. D.
            at; on
          

			
          
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          What did you do _____ your day off?
          

          [     ]
          A. on
          B. in
          C. by
          D. at
          

			
          
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          －What did you do ________ your last day off?
          －I took my dog _______ a walk. 
          A．in; for B．on; forC．on; asD．a(chǎn)t; on
          

			
          
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          What did you do____your day off ?      
          

          [     ]
          A. on 
          B. in 
          C. by 
          D. at
          

			
          
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