I bought an interesting book yesterday.

I have one cat named Felix.

One among them must make the final decision.

I only need one ticket for the concert.

The unknown component has a higher octane rating than expected.

They came one by one.

They crossed the bridge one at a time.

They faced each other one-on-one.

He's a tad tired after his long day at work.

I'm going to try another restaurant tonight.