问题描述：
Directions：This part is to test your ability to do practical writing.You are required to write a letter of reply to an invitation according to the information given in Chinese below.Remember to write the letter on the Translation/Composition Sheet.邀请人：王力 被邀请人：John Smith内容：王力及其妻子邀请John Smith夫妇来家中参加儿子一岁生日宴.时间定于6月10号下午七点在皇家饭店举行.回复：Smith回复自己将于近日回国处理公司要事,不能前往,表示歉意.
最佳答案：
Dear Mr. Wang:
Thanks for inviting my wife and I to your son's birthday party to be held on June 10 at 7PM at Royal Restaurant. Unfortunately, I have to go back to my country to deal with some important work in my company, so I am afraid my wife and I won't be able to present at 7 o'clock, 10th June.
Please accept my apology.
Yours sincerely,
John Smith