27．After the bell rings, which indicates the ending of the exam, you ______stay where you are until all your papers are collected.

It is important us each other.

My daughter, 　　　job requires her to do a lot of travelling, is always away from home.

It is in Qingdao_____ you’re going to pay a visit to_____ this kind of washing machine is produced.

I had meant to meet you at the airport this morningbut I was too busy for I_______ a report