写一篇英语作文，根据提示写一封60~80词的信 （初二作文，快快快，来得及加10分，说到做到！！！！！）

今晚就要，来得及的加10分汤姆邀请李萍参加他这周日的生日宴会，但李萍的父母出差要到下个月回来，奶奶又卧病在床，需要人照顾。而且英语考试即将来临，因此李萍无法前去参加生日宴会。她感到十分抱歉，只好写信辞谢。
Dear Tom,
Thank you very much for inviting me to your birthday party . I'd love to go but I can't___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
(快啊，急啊

！！！！！快啊！！！！！！！！！！！！，在线等！！

and here I wish you a happy birthdayBut I can't go to your birthday.Because my parents on a business trip to be back next month, grandmother sick in bed, need care. I am very busy recently, but also to review the English exam. I am very sorry

maggie： hi,i am lingling,i am here to asking for your help.last night,i came to a dancing party and weared my sister's new shoes.i didn't get her permission to wear her shoes.how unlucky!the shoes was broken and i don`t have enough money to get it repaired. i am afriad to tell my sister this.what can i do??maybe i can mend it by myself??please give me some suggests.thanks a lot. lingling 刚写完，希望对你有助喔。。