NOTE: Nếu bạn thi nói (speaking test), không quan trọng khi bạn trả lời đúng hay sai, vì đều là ý nghĩ của riêng bạn. Nói đúng ngữ pháp + Nói lưu loát + Diễn tả được ý của mình là được điểm cao rồi

$1.$ No, I don't. Nowadays people depend so much on technology, even when people are sitting next to each other, they still surfing the internet to chatting with each other. Gradually, this will become popular and people may lose real communication. But on the other side, it's useful that it allows friends and family overseas to stay connected.

$2.$ The older person less often has an intuitive approach to new technologies, it's most affected to their eyes and leads to blindness than younger people.

$3.$ Yes, the benefit of it offers more flexibility for the learner, allow people from afar to learn online. It is also cheap so students can buy them. 

$4.$ I agree, because it automated processes and manufacturing such as high-tech computer systems, phones, and so on.

$5.$ Yes, I do. The fact that/ due to nowadays, it requires a lot of investment, some may cause security issues, a lot more disadvantages that they must fix.