In her new school she is nearly the only white girl.

She was the only nice girl in all the world.

She is the only girl in a family of four boys.

The only girl he had been close to was his sister.

She was beyond any doubt or question the only girl on earth.

Nor was she the only girl a third his age that he brought in.

I was the only black girl in my class of three hundred.

Try growing up as the only girl in a family with three brothers.

"Maybe you're not the only girl around that wants to have fun sometimes."

She was the only girl in a family of four brothers.