A thanking lttr 英语作文网收集整理 Dar Wang Fang, Thank you so much for your kind invitation to spnd th summr holidays with you. It was vry good of you to invit m, but I'm sorry to say that I shall not b abl to go. I will tll you why. First of all, my mothr is sriously ill. And my fathr is always busy with his work. I shall hav to look aftr my mothr and do som houswork. Thank you again for your invitation. Yours sincrly Xiao Hong A thanking lttr 英语作文网收集整理