高中英语作文：给Nancy的一封信

Dear Nancy,

I'm so glad to receive your I'm so sorry for you,I'm afraid that I can't go to there,because I have something important at Satarday.

Thank you invite me,but I have to go to the art class and dance class,both them make me so busy on at night,I must go to my teacher's home to do my it's so pity that I can't attend this you again for your invition,I hope you can tell me something about this activity by letters.

Yours,

Li Hua