【正确答案】 Dear Helen,
I remember all the time that your birthday is around the corner. I am sure all the friends and relatives are planning a big birthday party for you. May I join them in wishing you a happy birthday?
How I wish I could stretch out my hand to shake with you, but you are so far away on the other side of the globe. Do you know how much I cherish our friendship during the past ten years, and how much I anticipate maintaining it for the years to come?
I write this letter to send my heartiest congratulations. I am sure that your birthday party will be a great success and I wish you many happy returns.
Yours sincerely,
Wang Xue