阅读下面短文,根据短文内容,完成下列句子。
Hello, everyone. My name is Jim. I have two friends. They are Carl and Eric. We all love sports.
I like basketball. I always play basketball with my classmates at school. I play it with Carl and Eric on Sundays. I love doing sports. It’s easy and interesting.
Carl loves soccer. His father likes soccer, too. His father is a P. E. teacher. They are in the same school. For Carl, soccer can make him happy. And he always plays it with his father on Saturdays. For him, it is very interesting.
Eric’s favourite sport is ping-pong. And he plays it very well. He knows some ping-pong players on TV. He is a fan of Xiaoning. He wants to be a ping-pong player like her. So he practices ping-pong every day.
51. When does Jim play basketball with Carl and Eric?
He plays it with Carl and Eric
______________.
52. What does Carl’s father do?
His father is
_______________.
53. What is Eric’s favourite sport?
It is
______________.
54. What does the underlined word “they” refer to (指代)?
It refers to
_______________.
55. Which English word in the passage means “练习”?
It’s “
______________”.