.英语翻译 书面表达

Dear Sarah,
These days , I found that my classmates were unfriendly to me .
Last Saturday , one of my classmates held a birthday party , she invited many of our classmates but me. I wonder why . Had I done something wong?
I'm so upset now. could you give me a hand ? I don"t know what to do now .
Yours
Tina

Dear Sarah,
These days I feel very sad because I find that some of my friends are not very friendly to me. Last saturday, one of my classmates hold a birthday party and she invited many classmates except me. What can I do? Please help me.
Yours,
Tina

Dear Sarah,
I have a problem these days, and I need your help.
I am not getting on well with some of my classmates. I don’t know why. Last Saturday one of my classmates had a birthday party at home. She invited many classmates in my class, but she didn’t invite me. I feel worried and I don’t know what to do, could you tell me what I should do?
Yours
Tina

These days, I found that it is not friendly between my classmates and I. Last Saturday, a birthday party of one classmate in our class , she invited the class of many students, but she did not invite me. I am really sad, you say what made the case? I was pretty sad.