Modify the following paragraphs.

Dad's hometown is in Tianjin. He has a wide range of hobbies. He can play basketball, calligraphy, singing, drawing and so on. On Sunday morning, I asked my father to accompany me to Xinhua Bookstore to buy a complete set of solutions for primary school Chinese textbooks, but my father was going to the company to participate in a basketball game. I have no choice but to buy books by myself.