第五篇：
Dear Friends:
You can hardly imagine how joyfully I was thrilled when you said in your jointly-signed letter that we could have an opportunity to spend our holiday together. It seemed apparently impossible for me to turn down your offer as I was really fed up with the kind of life I led; however, on the day following the arrival of your letter, an old family friend of ours wrote to tell our parents that he would come and be our house guest for a few days. He is not yet here, but the time of his proposed stay, unhappily and quite accidentally, coincides with that of our vacationing plan. As a result, I was advised not to leave our home at that time. I hate to write this, but as you can see, I`ve got no choice. Please write me about your reunion and let me share the joy you are going to have. Sincerely, Agnes.
第六篇：
Dear Jenny:
Thank you for inviting me to holiday with you, which was what I had been expecting all the time. I would have gladly accepted your invitation, but now I am afraid I can`t. Yesterday I received a letter from my parents in which they said they hadn`t seen me for long and hoped therefore I could be back at home for a while. They missed me not without a reason because ever since the start of summer vacation I have been working part-time in Taipei as a bookstore clerk and have not had much time I could call m