The possibility that she might come back early hal never entered their minds.

And, as always when any such possibility passed his lips or entered his mind, he found himself thinking of Karen.

This is a major concern as it provides the possibility for radioactive waste to enter into public water supplies.

The only explanation has to be that the possibility of a simulation that would keep running for years never entered your head.

This possibility had never entered into my plans.

The possibility that she might actually consider befriending such a being had never entered her imagination.

"That's true, I guess," she said looking like the possibility had never entered her mind before.

Funny, but the possibility of their bumping into each other hadn't entered her mind.

The possibility of her being dead never once entered his mind.

The possibility of not getting back never entered her head.