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快乐二锅头
Dear Jack, Thank you for your invitation. I am very sorry that I can't go to your birthday party.My parents are not at home and they are coming back next week. My grandma is ill,and she is very old. I must look after her.The English exam is coming , I have to study for the English test. I have to have my guitar lessons, and practice the guitar every day.so I can't go to your party. Happy birthday to you! Hai Lin