题干
假如你是李华，国际学校的教师Paul邀请你星期六参加该校举行的“中国文化日”活动。但你爷爷突然生病住院，你要和父母一起去医院探视，不得不谢绝他的邀请。请根据下列要点用英语给Paul写一封电子邮件。
要点：1. 谢绝邀请；2．说明理由；3．预祝活动成功。
注意：1.词数100左右；2．可以适当增加细节，以使行文连贯；3．邮件开头和结尾已为你写好。
Dear Paul，
……
Yours，
Li Hua
答案(点此获取答案解析）
Dear Paul，
Thank you very much for inviting me to attend the “Chinese Culture Day” to be held at your school this Saturday. I have been looking forward to it. I believe it will give your students more ideas about Chinese culture and will be grea
