Răspuns:
La 2 e varianta a
la 3:
1: because they are still growing and the lack of sleep may cause problems when they are older
2: they need between 8 and 10 hours of sleep
3: you cannot concentrate at school, so you have a worse performance
4: Because they make poorer decisions and it tastes good.
5:We should avoif drinking coffe or energy drinks and getting stressed