Happy New Year! 新年快乐!
Merry Christmas! 圣诞快乐!
Happy Easter! 复活节快乐!
I'd like to wish you the best of luck! 祝你事事如意!
May you achieve even greater progress in the coming year! 祝你们在新的一年里取得更大的进步.
For other's enjoyment 祝他人过得愉快
Have a good time. 祝你过得愉快.
Enjoy yourself and good luck. 祝你愉快,好运.
I wish you every success. 祝你成功.
Congratulations 祝贺
Well done! 干得好!
Please accept my hearty congratulations. 请接收我诚挚的祝贺.