第2个回答 2009-11-13
Dear Bob,
I have received your invitation of your birthday and I really want to come to the party. However, my father was ill and I must take care of him. I'm very sorry to say that I can't go to your birthday party and ask for your excuse. I will go to your home as soon as my father gets better. Please give my greetings to everyone.
Best wishes.
Yours,
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