Dear Mr.*/Mrs.,This is to thank you for your invitation. I really want to go, but unfortunately I have to go hospital (或者写其它理由) that day. What a pity!I'm really appreciated for your invitation again.Your sincerely,***
Dear Mr.*/Mrs.,
This is to thank you for your invitation. I really want to go, but unfortunately I have to go hospital (或者写其它理由) that day. What a pity!
I'm really appreciated for your invitation again.
Your sincerely,
***