Complete the sentences ith the appropriate words.
1 . In 1963 , the ... was introdused .
2. ... ... machine ( 1962) changed our life .
3 . In 1972 , in the UK , Sinclair launced the first affordable ... ...
4 . ... ... have revolutionised how we communicate .
5. In 1999 , ... introduced the ... 3210 that sold 160 million .
6 . Orville Wright made the first powered ... flight ( right ) on December 17 , 1903 , on a windy hillside in North Carolina , USA .
7 . ... ... ... invented the first telephone .
8 . The internal ... ... is the main source of power for most cars , planes and boats .
9 . We will ... that file when the boss tells us to .
10. I use my ... when I will messages online.
11 . How often do you ... ... your phone ?
12 . Have you ever come across any content on the ... ?
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