A merry Christmas from all of your students.
祝您圣诞快乐，您的全体学生敬上。

Wishing you and your family a very merry Christmas.
祝福您及全家圣诞快乐。

Thank you for your hard work and patience on this holiday season.
值此佳节，谨对您的辛勤栽培表示感谢。

Thank you for all you have done for us.
感谢您为我们所做的一切。

Much joy to you in the upcoming year.
愿您在新的一年充满快乐。

Season's greetings to my dearest parents!
祝我最亲爱的父母节日愉快！

Merry Christmas to the world's best parents!
祝世界上最好的父母圣诞快乐！

A Christmas greeting to cheer you from your daughter.
愿女儿的祝福带给您欢乐。

May you have the best Christmas ever.
愿你过个最愉快的圣诞节。

Warmest thoughts and best wishes form your daughter.
寄上无限的思念和最美好的祝愿，你们的女儿。