But before any exchange could take place, a shot was heard from the other room.

Others who were present said the exchange never took place.

It was only because an exchange took place that the truth came out.

It was the first and last time such an exchange took place.

Your husband met with someone and an exchange took place.

The whole exchange could not have taken above a few seconds.

I think we'll see every exchange in the world take a big hit.

A second such exchange took place some four years later.

The following exchange takes place in less than a minute.

The exchange took place in less than a second and then they were looking at each other.