---The police have been______ the area for quite a long time.---I’ve also noticed that. What have they been______?
He was working on a new book ________ I went to see him.
Not until the motorbike looked almost new repairing and cleaning it.
---I’m going to San Francisco for a couple of days---_________.I wish I could get away for a while.
It's no good ________ here. Let's go home.
In no country other than Britain, it has been said, ________ experience four seasons in the course of a single day.