Not a single cloud could be seen in the sky. ✬

In no country other than England, it has been said, can one experience four seasons in the course of a single day. ✬

I'm still single. ✬

I'd like to reserve a single room. ✬

Are you married or are you single? ✬

Would you like a single room? ✬

The children went upstairs in single file. ✬

I don't have a single enemy. ✬

My oldest brother is single. ✬

Not a single person arrived late. ✬