1. A couple of photographs on the wall brought back memories of my childhood.

2. Bell's telephone consisted of a transmitter, which converted sound into electrical signals, and a receiver, which converted the signals back into sound

3. Coffee has a long history, with the first known coffee plantations dating back to the 15th century.

4. Foreclosed properties may have back taxes or other outstanding debts, which the buyer may be responsible for paying.

5. Me duele la espalda. (My back hurts.)

6. Revise and edit: After you have a complete draft, it's important to go back and revise your work

7. Sometimes I wish I could go back to a time when I didn't know so much about the world - ignorance is bliss, after all.

8. Sometimes I wish I could unlearn certain things and go back to a time when I was blissfully ignorant of the world's problems - ignorance truly is bliss in some cases.

9. Television has a long history, with the first television broadcasts dating back to the 1920s

10. The culprit behind the cyberattack on the company's servers was traced back to a foreign country.

11. The invention of the telephone can be traced back to Alexander Graham Bell, who is credited with patenting the first practical telephone in 1876

12. The origins of many Christmas traditions can be traced back to pre-Christian times, such as the use of evergreen trees and wreaths.

13. The store was closed, and therefore we had to come back later.

14. The website is currently down for maintenance, but it will be back up soon.