Правильны ли предложения: 1 - you shouldn't to run around the class. 2 - you shouldn't to touch the electrical outlet.

Без to там пишется везде

Да,эти предложения правильны

1My best friend is Maks
2 My friend studies in Kalnenu school
3  my friend has got brown eyes black hair and he is slim
4 my frien is a huge fan of football and also he likes cycling
5 I just go and talk with people and then I have friends
6 we are friendly and funny
7 yes they are awesome
8 yes I think that all of my friends are faithfull
9 no, not very but still we have it
10 he likes drawing playing footbal and cycling

(надеюсь ничего если я сочинил друга:D)

I had a very good time last summer