1. 根据语境，从方框中选择恰当的单词填空。有的需要变换形式。

look, boy, month, there, because, free, Useful, lesson

1. （1） I want to learn English. Do you have somebooks?
3. （2） Ms. Green is the mother of twoand a girl.
   
5. （3） The math class is in Classroom 518, and you must beat 10:00.
7. （4） Gina is not happyshe lost her favorite watch.
   
9. （5） —Let's play soccer this afternoon.

   —Sorry, I'm notthen (那时).

11. （6） Helen and Monica work together (一起) for two
    
13. （7） I like music and I have three musica week.
15. （8） I don't like this book. It boring.