I didn't notice the spelling mistake. Could you please check which alternative is best? Thank you.

1) I did't manage to finish my homework before the beginning of the school.
2) On 30 December I was with a group of friends. (I spent New Year's Eve with a group of friends)
3) I spent the rest of my holiday meeting my friends, doing homework and going to callisthenics practice.
4) On Epiphany Eve the "kindly old woman" brought me many sweets and a pair of earrings. On 8 January I went back to school as all my classmates (did) / like all my classmates.

1. check spelling

2. Wording in parentheses is better, more detailed. comma needed!!

I'm not commenting on any more until you go back and re-read what should have been corrected already ... and revise.

Sure! Let's go through each alternative and evaluate which one is best.

1) "I did't manage to finish my homework before the beginning of the school."
The correct word here should be "didn't" instead of "did't." So the corrected sentence would be: "I didn't manage to finish my homework before the beginning of school."

2) "On 30 December I was with a group of friends. (I spent New Year's Eve with a group of friends)"
This sentence seems fine. It mentions being with a group of friends on December 30 and implies spending New Year's Eve with them.

3) "I spent the rest of my holiday meeting my friends, doing homework and going to callisthenics practice."
This sentence is grammatically correct and effectively communicates how the rest of the holiday was spent.

4) "On Epiphany Eve the 'kindly old woman' brought me many sweets and a pair of earrings. On 8 January I went back to school as all my classmates (did) / like all my classmates."
There seems to be a slight confusion with the use of "did" or "like" here. Without additional context, it's unclear what the intended meaning is. You might want to clarify whether you meant to say "as all my classmates did" or "like all my classmates."

Overall, considering these alternatives, the sentences that appear to be correct are:

2) "On 30 December I was with a group of friends. (I spent New Year's Eve with a group of friends)"
3) "I spent the rest of my holiday meeting my friends, doing homework and going to callisthenics practice."

I hope this helps!