Both grow up until they are destined to exchange places on their 22nd birthday.
The keepers and kept were soon made to exchange places.
"To exchange places with me and be forever free of this?"
The men agreed, and William exchanged places with his father.
"I want to know something about you," Forrest said, as he came in to exchange places.
It was as though they had exchanged places with the two natives they'd just watched.
"You will exchange places with him no more," he said.
As though the living and the dying had somehow exchanged places.
I would have exchanged places with Sam, if that were possible.
Most of the 99% would exchange places with the 1% and keep things exactly the same 100%, tragically.