范文：
Dear Lucy,
I'd like to invite you to join us for a visit to the nearby nursing home next Saturday for the Double Ninth Festival. It is the day for the elderly in our culture. We'll go and make dumplings and cakes with the elderly people there. We'll also spend some fun time together singing, dancing and playing games, which we hope will make them happy. We should come back around 4 o'clock in tne afternoon. If you are able to come with us, please let us kow and we'll wait for you at the school gate at 9 in the morning.
Looking forward to your reply.
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