Somehow, the old man had ________ a dangerous secret, one which could not be discussed in a room on a military base.
Gun control is a subject __________ Americans have argued for a long time.
English is a language shared by several diverse cultures, each of __________ uses it somewhat differently.
Between the two parts of the concert is an interval,__________ the audience can buy ice cream.
Ted came for the weekend wearing only a T-shirt and shorts,__________ is a stupid thing to do in such weather.
The children,__________ had played the whole day long, were worn out.