1. 

   cannibal New Member

   open the brackets.use present perfect progressive or past perfect progressive 1-my brother and I (to clean) my room since 2 o'clock 2-wealready (to clean) our room for an hour when mum came home.

    

   cannibal, 17 мар 2010

   #1
2. 

   PcHeLa New Member

   have been cleaning
   have  being cleaned
   have being building
   have been builing
   has been working
    

    

   PcHeLa, 17 мар 2010

   #2

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