1.We apologize for not replying you earlier.

　　对于未能早一点回信给你，我们感到抱歉。

　　2. I’m really sorry about this.

　　关于这件事，我真的很抱歉。

　　3. Sorry, I’m late in replying to your e-mail dated Monday, April 1.

　　抱歉，太迟回您在4月1日(星期一)发给我的邮件。

　　4. We apologize for the delay and hope that it doesn’t inconvenience you too much.

　　我们为耽搁道歉，希望不会给您带来太多的不便。

　　5.Hoping that this will not cause you too much trouble.

　　希望不会为您带来太多的麻烦。

　　6.Sorry if my voice message is not clear enough.

　　如果我的电话留言不够清楚,我深感抱歉.

　　7. Thank you for your help.

　　谢谢你的帮助。

　　8. I appreciate very much that you...

　　我非常感激你。。。

　　9. I truly appreciate it.

　　我真的很感激。

　　10. Thank you for your participation.

　　谢谢你的参加。

　　11. Thank you so much for inviting me.

　　非常感谢你邀请我。

　　12.Congratulations to all of you and thanks for your efforts.

　　恭喜各位并谢谢各位的努力。

　　13. Your understanding and cooperation is greatly/highly appreciated.

　　很感激你的理解及合作。

　　14. Your prompt response will be most appreciated.

　　很感激你快速的答复。

　　15. Once again, thank you all for your commitment and support.

　　再一次感谢你的承诺及支持。