阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。

Here is a photo of my family. My father's name is Nick. He(like) sports. He has seven tennis(ball). Bob is(he) son. He likes sports , . (them) always play tennis in the afternoon. My father has  (fifth) soccer balls. And he can (play) soccer after school . Helen is my mother. She has two ping-pong bats. But She (not) play ping-pong. She only likes to watch ping-pong games on TV the evening. She thinks it is (interest) to watch them on TV.