31. All his attention______on the computer game, so he even didn't notice his mother enter the room.
--- Have you telephoned your father ? --- Yes. He _____ back next year.
--____ you _____the chief editor at the airport? ---No. He_____away before my arrival.
.He simply repeated this year's work. He's the sort of boy who _____ to anyone whatever failures he'a had in whatever he does.
---May I speak to your manager Mr.Willians at five o'clock tonight?" ---"I'm sorry, Mr.Williams _______ to a conference before then."
The teaching building of our school_____ for many times.