道歉信Directions:　　Directions: Your friend Xiao Feng invites you to attend his birthday party. But you are not able to attend it, Write a letter to him to　　（1） express your regrets,　　（2） state the reason,　　（3） offer your congratulations.　　You should write ab...

道歉信Directions:　　Directions: Your friend Xiao Feng invites you to attend his birthday party. But you are not able to attend it, Write a letter to him to　　（1） express your regrets,　　（2） state the reason,　　（3） offer your congratulations.　　You should write ab...