下面短文中的画线部分是错误的，请改正，但不得改变原文意思，并将正确答案写在右边相应题号的横线上。
I'm John. I'm at Grade Eight, Rocky
Mountain High School. Every Monday, I go to the Buddy Club. In a club,
older students help new students learn more about the school.
My friend Sam is in the nine grade.
He often listens careful to my problems. He always offers I some
help. He's a hero in my heart.
We have different class every day.
On Friday afternoon, our school ends early than usual. My friends and I
often go to the Science Club together two times a week, we write robot programmes
after school.
We love making things because we
practice hard each time. Our team win two competitions last term. We
were very happy.
