By the time Fred gets back home, hisgirlfriend for London to study.

— Who do you think ________ the book here?— It may be John. He was sitting here all the morning. [ ]

It’s five o’clock. My children______

－Why don’t we choose that road to save time－The bridge to it _______ .

In the middle of the night, there suddenly came a loud thunder, _____ the alarms of the cars parking below us.