It was, the sheriff saw, a piece of white string.

There is no such thing as a piece of string with only one end.

He was holding a nail on a piece of string.

The road wound away before them like a piece of string.

That's why I'm carrying it around with me on this piece of string.

Now when I bought these books they were tied together with an old piece of string.

Usually there is only one piece of rope or string.

I should think that a piece of string would do just as well.

He went at it like a cat to a piece of string.

The key was around his neck on a piece of string.