How is everything?一切都好吗?
I hope everything is all right.我希望(你)一切都好。
How are you?你好吗?
How are you getting along these days? I miyou very much.你近来过得怎样?我十分想念你。
I was very happy to receive your letter of October 10th.我很高兴收到你10月10日的来信。
Thank you for writing to me.谢谢你给我写信。
Your letter came into my hand yesterday.我是昨天收到你的来信的。
It's a long time since I got your last letter.我收到你的信已经很长一段时间了。
I'm sorry I took so long to reply.很报歉给你回信晚了。
I have been so busy recently that I could hardly find any time to write.我最近挺忙，未能抽出时间给你写信。
Many thanks for the wonderful present you sent me.谢谢你寄给我那么好的礼物。
I'm so sorry for not having written to you for such a long time.十分报歉，很久没有给你写信了。
How nice to hear from you again.
Let me tell you something about the activity.
I‘m glad to have received your letter of Apr. 9th.[/color]
I‘m pleased to hear that you’re coming to China for a visit.
I‘m writing to thank you for your help during my stay in America.
Please remember me to your whole family.
Give my best regards (wishes) to your mother.
Wish you a pleasant journey.
Wish you success. Wish you the best of health. (luck)
Looking forward to your next visit to China.
Looking forward to the pleasure of meeting you.
Expecting to hear from you as soon as possible.