按要求完成句子，每空一词。

1. We go swimming every afternoon. (改为祈使句) 

    ______ ______ go swimming every afternoon.

2. My sister is twelve years old. (就画线部分提问)

    ______ ______ is ______ sister?

3. The elephants are friendly, so I like them. (改为同义句)    

    I like elephants ______ ______ ______ ______.

4. The story is a little interesting. (改为同义句)    

    The story is ______ ______ ______.

5. There are five people in my family. (改为同义句)

    I      __  a family   ___     five people.