Now, four years later, the city has become his reason to stay.

The only reason to stay is that sometimes a man can't run.

"I have good reason to stay near all three of you!"

They could leave now, there was no reason to stay.

My research is done so I have no reason to stay.

There would be no further reason for her to stay.

There was no reason for him to stay in his house.

"When the war is over and we are married there will be no reason to stay."

There was no reason for him to stay any longer, either.

But after all, there was no longer any reason to stay.