Today almost everybody has got a telephone, but ______________ (you ever think) about the time when people ______________ (not have) telephones? In the past, when people ____________ (want) to talk someone who ___________ (live) far away, they _____________ (write) letters. Many things ______________ (change) since then! The biggest change ___________ (come) in 1876 when Alexander Graham Bell, since then the telephone ___________ (became) very important to all of us. He ___________ (make) our lives a lot of easier.
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