Viết 1 đoạn văn từ chối lời mời sinh nhật bằng tiếng anh ( 50~100 từ)

I am very happy to give you an invitation for my birthday party.Sorry I Cant Go, because i have to to visit (somewhere) or i need to look after my house i mean no one at home. because I must visit my grandparents at the hospital! Their health situation is very bad now!Sorry and I also thank you for your birthday invitation

Dear Nhi,

I am very happy because I am invited to your birthday party on Friday. However, I am afraid that I cannot come to your birthday party. I have to prepare for the coming examination, so I am very busy to attend your party. I apologize to you for not coming and enjoying your party. I wish you would have an interesting party with your family and friends.

Best wishes,

Jane.