Thank you for inviting/asking me to your farm. However, I am sorry that I can't go there because I am very busy. Today is Friday and I am going to see my grandparents after school. On Saturday morning, I have to help my father clean up the garden. During the afternoon, I need to go shopping with my mother. On Sunday morning, I have to prepare for my Physics exam and I will attend Jay Chow's concert with my friends in the evening.So I am truly sorry for it and I will visit you next time.
祝你进步!