范文一：

　　Dear David: I am afraid that you will think me unpardonably negligent in not having answered your letter dated 7, December sooner, but when I have told you the reason, I trust you will be convinced that the neglect was excusable. When your letter arrived, I was just in Hong Kong. As my family could not forward it to me during my absence, it has been, therefore, lying on my desk until the moment when I took it up. Now the first thing I have to hasten to do is to write to you these few lines to express my deep regret.

　　I enjoyed many pleasant sights during my trip. I shall be pleased to give you an account to of them when I see you next.

　　范文二：

　　Dear Charlie, Kindly excuse me for my not being able to see you off at the airport this Saturday as I have promised. A major business partner of our company will be attending an important conference in Xiamen this weekend, and my boss finally chooses me to accompany him there to negotiate about a new transaction. I have just been informed of this plan and am happy about the decision—this is an opportunity to both display and enhance my abilities, so I am afraid I cannot be present at the airport. Pursuing study overseas is an essential step in the accomplishment of your dream.

　　范文三：

　　Dear Mr. Smith, I am indeed very sorry that I missed the examination on International Business English Writing you gave last Friday. I feel awful about it and want you to know what happened that day. I suddenly fell sick early that morning and my parents had to send me to the hospital. Please find enclosed a copy of the medical bill. I sincerely hope you can understand my situation and accept my apology. I would appreciate your allowing me to take a make-up examination. I will come to your office during your office hour on Monday to discuss this possibility with you. Once again, I apologize for any inconvenience caused. Sincerely yours, Wang Hua

　　范文四：

　　Directions:

　　One of your pen friends, John, will be visiting your city. However, for some reasons, you can not meet him at the airport on time. Write a letter asking to wait for you at the airport and tell him how to recognize you. Your letter should be no less than 100 words. You don’t need to write the address. Don’t sign your own name at the end of the letter, use Alice instead.