一个朋友邀请你参加他的生日宴会

Dear Sir/Madam：

Let !downYour birthday of time I am on business to train a study still in Guangxi, can't accept your invitation.

The loyal appreciates your invitation!

Is really embarrassed, I want to ask for leave to come back to attend your birthday party, but superior different idea, I make again after only coming back late come of wish:Your happy birthday!

Wish your happy birthday!

Lee 婧婧
Expensive sun
Telephone:0851

I so much appreciate your invitation for your birthday party. I'd really love to go, but I need to pick up my parents from the airport exactly at that night. So do have fun and happy birthday to you in advance! I will make it up for you later!