The telephone was invented in the1876 by Alexander Graham Bell, a Scotsman (1)___________ became a US citizen. The word "telephone" had been in existence since the 1830s and had been (2) ___________ to a number of inventions designed to produce sounds.
Bell had become interested in the possibility of long- distance speech through his work with the deaf. He was twenty- eight and his assistant, Thomas Watson, was (3) ___________ twenty- one when they (4) ___________ their great success on 10th March 1876. Despite their long and close association, Bell’s first (5) ___________ by telephone was not " Tom, come here, I want you", but " Mr. Watson, come here, I want you"