Where is Everybody?

          WHERE IS EVERYBODY                        Jan 10 2014     
             By:Steven                  

Today I finished EL,come back to classroom.  But nobody is here,all the lights are off, they are gone! But all the backpacks are on the hooks,so I go to the library first.But is not 5B,is 5G.And then I go to the gym,but nobody is there too."Where are they?"I said. I don't have any ideas.So,I go back to our classroom,writing this paper.Just then,a teacher come in,ask me "where is your class?""I don't know."I said."come on,"she said "let us go and find them." "OK"I said. 
    After 10 minutes, we find everybody in the room,I am so happy.Who can tell me when and which class we can go there?