根据句意，用括号内所给单词的适当形式填空。

1. That _______ (sound) interesting.

2. Here are my _______ (photo).

3. What's your ________ (one) name?

4. I have two sisters. I like _______ (they).

5. My sister ________ (like) playing sports very much.

简述遗传素质在人的身心发展中的作用。