1. 根据语境从方框中选择恰当的不定代词填空。

anything, someone, everything, everyone, something, nothing

1. （1） Listen!is singing in the office. Who is she?
3. （2） There isbut a chair in the house.
5. （3） in my family likes table tennis. We often play it together at weekends.
7. （4） is ready. Let's begin the party.
9. （5） Frank was too tired，so he didn't want to doafter work.
11. （6） It's boring to play chess. Let's dodifferent.