Why do youth cultures exist? what are their functions? what are the youth cultures of today?

Because it is very fashionable and octopus. Learn and learn new things. Responsiveness and search for new things.

2)The weather in November is usually nastier (nasty) than in October. October doesn't have so many rainy days. 3)Mary's bedroom is the most comfortable (comfortable) room in the house. It is always clean and tidy too. 4) Peter thinks he is the strongest (strong) in his class. But I don't think so. Myfriend Henry is a lot stronger (strong) 5) Kate's English is better (good) than her French. She speaks English very well. 6) This little book is dearer (bear) to me than any book in the bookcase: it is my sister's present. 7) The film we watched yesterday is more interesting (interesting) than the film we are watching now. 8) Mary says she is the happiest (happy) wife and mother in the world. 9) Diana is the best (good) pupil in her class. And who is the worst (bad)? 10) We wanted to have all the tastiest (tasty) things for our holiday dinner.

1) Если все дети должны ходить в школу. Это значит, что среднее образование ОБЯЗАТЕЛЬНОЕ в России, Британии, Австралии и наиболее развитых странах среднее образование (10 букв).
ответ: COMPULSORY (education) — обязательное обучение 
2) Человек не получающий образование ни в школе, ни в университете (7 букв).
ответ: HEATHEN – неуч (варвар) 
3) Синоним глагола "посещать" в контексте "посещать уроки" (6 букв). ответ: ATTEND 
4) Задание написать несколько предложений много раз, используемое в качестве наказания (5 букв).
ответ: LINES
5) Вид наказания, когда ученик не допускается в школу в течение нескольких дней или недель (10 букв).
ответ: SUSPENSION – прекращение, приостановка.