---Look, the light is on. Ms Green must be in her office. ---No, it can’t be Ms Green. I saw her ______ her office just now.A. left B.leaves C. leave
We ____ not to play computer games.
He was crossing over to _____ side of the road when I saw him.
—Did you do the interview _____ the head teacher yesterday? —Yes. We talked a lot.
Shanghai World Expo was the most important _____ in China in 2010.
—I hear that Tom’s father has gone to Africa. —Really? ____