关于初二英语作文

Thank you very much for inviting me to your birthday party on Sunday. But I am kind of busy,so i can go to your birthday party .I am sorry for that.My mom was ill,i am really worry her,i need to take care of my mom and i hope my mom will be better soon.This is a piano class that i have to have,i just cannot put it off.And this is something i want you to know,the english exam is comming,It is very important for me,i want to get the best grade i can so badly,and i must get ready for it.
Hope you can understand me.Enjoy yourself!!
Best wishes
Nancy