2 . 根据首字母提示完成对话。
Mum: W    1     are you doing, Mike?
Mike: I’m reading a book about s    2    , Mum. It’s very interesting.
Mum: It’s time f    3     lunch. You n    4     to have lunch now.
Mike: My class had a talk about our d    5     yesterday. Our teacher said we must s    6     hard for our dreams.
Mum: So, what’s your dream?
Mike: To be an a    7    . It is very cool to t    8     in space. I will read more books. I will also do more s    9     to become strong.
Mum: It’s a good idea. But you should k    10     h    11     first, I think. It’s important to h    12     meals on time.
Mike: You are right, Mum.