

1.FB/most popular social network/many people/students/ free time/do harm/its users.
2.Accordingly, more time/students/spend/socializing /virtual world/less attention/pay/classroom tasks/low scores/even /fail/exam.
3.If students sit/back bents/constantly fix eyes/screen /smartphones/computers/long time/which/poor/eyesight/backache.
Ac giúp e với, e cảm ơn ạ!
2.Accordingly, more time/students/spend/socializing /virtual world/less attention/pay/classroom tasks/low scores/even /fail/exam.
3.If students sit/back bents/constantly fix eyes/screen /smartphones/computers/long time/which/poor/eyesight/backache.
Ac giúp e với, e cảm ơn ạ!