写一篇英语作文

Question

你班的交流生Mary来自英国。本周六她要在家举办生日聚会，邀请你去参加。请你根据邀请函和提示，写一封60词左右的信婉言拒绝她的邀请。开头和结尾已给出，不计入总词数。
Birthday Party!
Please come to my 13th birthday party.
Saturday,September 26th,5:00 p.m.
My house,No.25,West Palm street
Mary
提示：1.上午参加英语竞赛；
2.下午去足球俱乐部；
3.晚上去爷爷家吃饭。

Answer 1

Dear Mary
I have received your invitation. I'd love to take part in your birthday Party, but my Saturday has been occupied. I am sorry to say i will not come to your party. In the morning on Saturday I will attend the English competition. And in the afternoon on Saturday I have to go to the football club to play football. In the evening my grandpa will ask me to go to his house to have dinner with him.
Happy Birthday to you!
Yours friendly
Tom
(除去开头和结尾，大概70字左右。）