假定你是李华。你班同学决定为小明举办生日聚会。请你写信邀请外教Susan参加，要点包括：

Dear Susan,
We're throwing a surprise party for Xiaoming's birthday． It's a great honor for me to inform you to know the news. My classmate Xiaoming 's birthday is coming. The party is arranged from 8p.m. to 9p.m. on Friday in the school club. At the party,we will sing Happy Birthday songs for him. And there will be delicious cakes for us. Certainly you will have a good time at the party because we have arranged a lot of interesting games.
We all hope you could come. Don't forgot to bring a present with you.
Li Hua
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