No one likes to be alone.

No one knows the answer.

The total is one hundred.

Of these it is the latter one that is important.

This road is one-way, so you can only go in one direction.

One must hold one's ground even when faced with overwhelming adversity.

She did a one-eighty and decided to go out with him.

He is a one-man band.

I am the V-One.

I have one cat.