After living in Paris for fifty years he returned to the small town _______ he grew up as a child.
They were trying to remove harmful ______ from cigarettes.
Which do you enjoy ___ our weekend, fishing or watching TV?
Dr Brown has the habit of _____ the room when he is thinking about something troublesome.
There is a real possibility that these animals could be frightened, ____ a sudden loud noise.
____ others might have been satisfied, Dawson had higher ambitions.