III. Choose the correct answer A, B, C, or D to complete the passage.

Nam was a good student. But he started using a smartphone and spending too much time on ___(1)___ like Facebook and TikTok. He also liked joining in chit-chat and game ___(2)___ for teens. He spent a lot of time ___(3)___ notifications. He even neglected his schoolwork, and stopped ___(4)___ with his classmates, friends, and family members. One day Nam saw a video clip about a boy who was addicted to games, and had no friends, so when the boy was feeling down, he ___(5)___ others. Nam realised that he also had no more friends, except his younger brother.