While the Internet can bring people closer together, it can also harm friendships. Talking online through a screen makes it harder for people to concentrate or show friendliness     1     others. As is known to all, important social skills are developed through direct contact with other people. Besides, the Internet     2     (make) people self-centred. Some people are only concerned with their online popularity. They pay too much attention to the number of “likes” or followers,     3     wouldn’t contribute to meaningful relationships. Additionally, due to lack of basis of trust, online relationships can be particularly     4     (danger) for people who are easily influenced or too trusting.