Найдите и исправьте 12 ошибок в тексте. Помогите пожалуйста.Hi friend,My name

Это задание такое? То есть в учебнике дан текст с оплошностями, и необходимо отыскать конкретно 12? Так?

Да, ( как я помню, они должны быть грамматическими)

Hi friend,My name is Dasha.Im YOUR (ошибка) new penfriend. I am from Russia. I (БЕЗ AM -ошибка) live in Voronezh. Im 25. Im A (ошибка) web designer. I work for a popular newspaper. Its called Voronezh Times.My family IS (ошибка) not very big: father, mother, my sister and me. My father is an engineer and my Mum IS (ошибка) a librarian. My sister is fifteen. HER (ошибка) name is Ann. She is at school. We have two pets. I HAVE (ошибка) a dog and my sister has a hamster. I prefer dogs. They are nice.I like reading. My favorite writer is Den Brown. My favorite book IS (ошибка) Da Vincis Code. My favorite спорт is tennis. My favorite sports star IS (ошибка) Sharapova. She is a good athlete and she is so beautiful! She is like a model!When I AM (ошибка) free, I like singing and dancing. My favorite music is rap and Ramp;B. My favorite pop star is Britney Spears. She is great! At the weekend I like going to cinema with my friends. My favorite film is Pirates of the Caribbean. My favorite film star is Johnny Depp. HE IS (ошибка) great!What music do you like? WHO (ошибка) is your favorite star? Write soon,Dasha

ошибки исправлены и в скобках написано (ОШИБКА). хотя и слово favorite я бы поправила на  favoUrite, но вероятен и такой вариант.

Hi friend,
My name is Dasha.
I'm your (1) new penfriend. I am from Russia. I (2) live in Voronezh. Im 25. Im a (3) web designer. I work for a popular newspaper. Its called Voronezh Times.
My family is(12) not very big: father, mother, my sister and me. My father is an engineer and my Mum is (4) a librarian. 
My sister is fifteen. Her(5) name is Ann. She is at school. We have two pets. I have(6) a dog and my sister has a hamster. I prefer dogs. They are nice.
I like reading. My favorite writer is Den Brown. My favorite book is(7) Da Vincis Code. My favorite спорт is tennis. 
My favorite sports star is(8) Sharapova. She is a good athlete and she is so beautiful! She is like a model!
When I am(9) free, I like singing and dancing. My favorite music is rap and Ramp;B. My favorite pop star is Britney Spears. 
She is great! At the weekend I like going to the(10) cinema with my friends. My favorite film is Pirates of the Caribbean. My 
favorite film star is Johnny Depp. He is(11) great!
What music do you like? Who is your favorite star? 
Write soon,
Dasha