Dear Mr. Harkness,
Much to my regret I was unable to keep my engagement to meet
you at the park gate. I fear you are displeased at my failing to keep my promise, but I trust you will forgive me. Let me explain. My mother suddenly fell sick early yesterday morning, and I had to send her to hospital.
I shall be obliged if you will kindly write and tell me when
and where we may meet again. I hope to see you soon.
Your sincerely，
Evelyn
McCormack
Dear Kate:
Excuse me for my long delaying in returning to you your “Robinson Crusoe” which I read through with great interest.
I had finished reading the book and was about to return it when my cousin came to see me.
Never having seen the book, She was so interested in it that I had to retain it longer. However, I hope that in view of the additional delight thus afforded by your book, you will overlook my negligence in not returning it sooner.
Thanking you again for the loan.
Sincerely yours,
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.
Sincerely yours,