1. 将下列句子改成带有宾语从句的复合句。

1. （1） What did they talk about? The girl wondered.
3. （2） Where does your uncle live now? He often asks me.
5. （3） What will happen tomorrow? Nobody knows.
7. （4） Will he come tonight? I don't know.
9. （5） Which do you prefer, tea or coffee? I forget.