急求英语作文!关于李华的英语作文,100词左右

急求英语作文!关于李华的英语作文,100词左右
假如你是李华，你的国际学校朋友paul邀请你下个星期天去他们学校参加文化交流活动并介绍中国传统绘画，但是你的爷爷生病住院，不得不谢绝他的邀请。请给paul一封回信。要包含以下内容：1.谢绝paul的邀请，2.说明你的理由，3.推荐你的同学Anna参加。词数为100词左右的英语作文！！！

Dear Paul,
I have got your letter,and thank you very much for inviting me to your school's cultural exchange and the introduction of Chinese Traditional Paintings next week's.I am sure it would be a wonderful experience for me,there must be plenty to learn which I shall find it really interesting and a lot of fun.Unfortunately,I have a bad new to tell you.My grandfather has seriously taken ill.He is very old and I don't think I can leave him.Therefore I am very sorry that I have to turn you down,and won't be able to attend.But I have a class friend Anna who is very interested in such studies and she would like to go in my place.Would you welcome her?Please let me know as soon as possible.
Best friend of yours
LiHua