Look! The light is still on. Is Mr Wu working in his office？—No, it _____ be Mr Wu. He has gone to Nanjing for a meeting.

This pen belongs to . is a red one.

Do you know when the underground will _________?

Can you go to the movie with me this afternoon? —Sorry. I’ve __________appointment with my dentist. I’m going to see him.

_____bowlofnoodleswouldyoulike?—Alargeone.[ ]