参考答案

参考范文：
Dear Elaine:
    I am terribly sorry that I failed to meet you at Guangzhou Baiyun Airport. But I think you will forgive me if you know the reason. 
    Yesterday morning, I got up early for I was eager to see you. After breakfast, I telephoned a taxi to arrive at the gate of our neighborhood at 8 am. Hardly had I left the room to meet the taxi, when I heard my daddy breathe heavily and hard. I realized that he was having an asthma attack. I hurried to ask my neighbor for help since my mother happened to be out. He carried my father on his back and went straight to the coming taxi and we drove directly to the nearest hospital.  Please don’t worry. My father is much better now. Fortunately, I called a taxi in advance. Thus, we got my father to hospital in time. However, I should apologize for missing the opportunity to meet you at the airport.
    In order to compensate for my absence, I like to invite you to visit my home. Please let me know what your convenient time is.
    Again I hope you can pardon me for this matter. 
                                                                                                                                                                                                                                                                                                                                                                                    Sincerely yours, 
                                                                                                                                                                                                                                                                                                                                                                                         Li Ming