4/The last two decades have seen enormous changes - Dicamon

Question

4/The last two decades have seen enormous changes in the way people's lives are affected by IT Twenty years ago, few people had access to a computer while today

Answer

16. C. the World Wide Web and e-mail communication have affected modern life. 17. B. can be checked quickly and easily. 18. B. have also been used for education purpose. 19. D.

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