He feels it takes time to acquire new skills, but Rome wasn't built in a day.

The thirty-first day is my birthday.

We have our wedding on the twenty-first day of the month.

I have been to France once.

His first choice of school is the University of Tokyo.

I went to see a movie by myself.

He has a competitive spirit that does not allow even one defeat.

He finished all his work all at once.

Watching a movie alone is enjoyable.

I ate one apple.