INVENT CENTURY HEAVY GOOD ALWAYS HAPPEN COMPANY CAN FUTURE UNLESS
Telephones have changed a ___ since Alexander Graham Bell ___ the first one. At ___ end of the 19th ___, they were big and ___ and you couldn't hear ___. Making a call took ___ long time and you ___ talked to an operator. ___ the 20th century, phones ___ smaller and the sound ___ better than before. By ___ 1960s, you could make ___ call without talking to ___ operator. Another telephone revolution ___ in 1983. The Motorola ___ started selling mobile phones. ___ first mobile phones were ___ big as ordinary phones ___ they looked very old-fashioned. ___ people like them because, ___ the first time, they ___ take phones with them ___ they went out. Probably ___ will change in the ___ too. Today most people ___n't remember the early phones. ___ won't see them today ___ you visit a museum.
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