文中共有10处错误，每句中最多有两处错误。错误涉及一个单词的增加、删除
或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（＼）划掉。
修改：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 Lucy,
I'd like to invite you to join us for a visit to the nearby nursing home on next Saturday for the Double Ninth Festival. It is a day for the elderly in our culture. We'll go and make dumplings and cakes with the elderly people here. We'll also spend some fun time together singing, dancing or playing games, which we hope will make us happy. We should back around 4 o'clock in the afternoon. Unless you are able to come with us, please let us known and we'll wait for you at the gate at 9 in the morning.
Look forward to you reply.
Yours,
Li Hua
