Have you used one before?

No, I just used a seven.

The bubble gum was chewed up by pop star Britney Spears and sold for several hundreds of dollars.

And I've just used a word that I don't know if I've defined before, but the group are the columns in the periodic table.

And I just used both of these equations.

Photo by Andrés Kerese, used with permission.

Image provided by David Mason, and used with permission.

He is not supported by anyone, and he has repeatedly used peace talks to rearm and murder again and again.

And I used the limit definition of a derivative.

Photo by the creator of Facebook page Maidaners . Used with permission.

Photo by the creator of Facebook page Maidaners . Used with permission.

I could've used an ellipse for the top.

I Voted photo by Krishna Praveen, used under a (CC BY NC SA 2.0 license.

It has been used for over 200 years as a means of eliminating poisons from the stomach.

Cargo vehicles of the Progress series have been used repeatedly as scientific laboratories.

Appreciation was expressed of the methodology used.

Now I'm part of the union .Photo by Mijhail Calle, used with permission.

This phenomenon has been used as a diagnostic test.

Molten salts have been used to good effect.

The same should apply to objections here again, it is the intention which counts.

Square brackets have been introduced concerning which persons article 88 is to cover.

Those responses have been used in the preparation of the present report.

La Teacher Let Your Smile Change The World Photo by Elmer Alvarez, used with permission

Image by Omar Chatriwala on flickr (CC BY NC ND 2.0).

Hardcover book gutter and pages by Horia Varlan CC BY 2.0

Around half the aircraft engines used by the Allies in World War I were made by Rolls Royce.

I had been warned against you months ago.

Field Operations standard cost rates have been used for staff in the Field Service category.

Photo shot outside a church by Flickr user NeilsPhotography shared under a Creative Commons License

The acronyms SEM, SIM and SIEM have been sometimes used interchangeably.

III.7 ZyImage is the Court's principal electronic documentation storage software, which has been utilized by the Court for the past four years.

New versions of the programs used were produced in French, Russian and Spanish.

More recent information has been used in the interpretation of these data.

The following summary was based on all of this information.

Prior to the advent of spectroscopic analysis, such methods were widely used.

If I used someone else's pre death, I apologize,

These missiles, affordable and widely available through a variety of sources, have been used successfully over the past three decades both in military conflicts, as well as by terrorist organizations.

NOT for sale human trafficking . Photo by Ira Gelb, used under a CC BY ND 2.0 license.

General formulations were used when it became apparent that it was not possible to spell out the real intent.

International firms employed 1,909 persons, of whom 64 per cent were Bermudian.

Photo taken in Oecussi by Flickr user NeilsPhotography shared under a Creative Commons License

Similar candles were used in Japan until the early 10th century.

History Gaming has been used in educational circles since at least the 1900s.

Biofertilizers have been used in Kenya, the United Republic of Tanzania, Zambia and Zimbabwe.

Eleven Iraqi combat units were employed as independent manoeuvre elements during that operation.