The person we talked about ____ our school last week．

–Excuse me, sir, didn’t you see the red light?–Sorry, my mind ________ somewhere else.

 Your mother _______, however, say that to us that day.

—Have you ever been to Singapore?— Yes, I ____ there 3 times in 2009 alone.

— Why do you look so worried? —My computer broke down and my essay ______ unfinished since.