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

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.