假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。作文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏子符号（∧）并在其下面写出该加的词。
删除：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1 每处错误及其修改均仅限一词；
2只允许修改10处，多者（从第11处起）不计分。
Dear Jack,
How is everything going recently? I'm writing to tell you something more about my birthday. The other day we hold aparty to celebrate my 18th birthday. I received many presents from my friends and parents, including cards, books, CDs or so on. During the party we sang and danced, having good time. I thanked my friends for his help and company. At the meantime, I showed my sincere appreciation to my parents for bringing me up. Now I grow up, that means I should shoulder more responsibilities. I'll try my best to share more houseworks to reduce their burden. It's high time that I dosomething to repay them.
How did you celebrate your 18th birthday? I'm looking forward to hear from you soon.
Yours Sincerely
Li Jin
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