Проверьте на наличие ошибок. hello my dear friend. i'm so sorry, that i'm don't walked in the cinema with you. i confident, that this film very interesting and clever. the thing is, that i must was go with my pet to vet. my mom takes small kitten, we must were do some procedure. my cat must be health. i have a good idea, may be we can go in the cinema on this sunday? i am so ashamed that it is happened. hope, for you understanding. pleas, emailing your answer for me.

Hi my dear friend. I'm so sorry that I didn't go to the movies with you. I'm sure this film is very interesting and smart. the fact that I had to go with my pet to the vet. My mom took a little kitten, we had to do some procedures. My kitten is very healthy and we did everything possible vaccinations.. I Have a good idea, maybe we can go to the movies this Sunday? I'm so ashamed that it happened. I hope for your understanding. A petition, email your answer to me.And again I want to apologize. 
Держи там было пару ошибок где мама брала котенка,и что мой кот должно быть здоровье.Я там исправила.Удачи)