It was on my way back home ______ my teacher made the promise______I can do nicely next exam I will buy me a set of LuXun’s Complete Works.

---Who is making so much noise?---___ the children.

 Is it that you often play computer games ________ worries your parents?

— Why didn’t they complete the task in time?— Because it was not until late afternoon _____ they began to solve the major problem．

It was not until the end of the meeting_____________.