阅读下列对话，从方框内选择适当的句子填空。

A. It can help me understand the world. B. No, I don't. C. What's your favourite subject? D. What about you? E. Good idea! F. I want to write stories about you.

Kate：

Tim: Let me see. I like science，Chinese and art. My favourite subject is science.

      

Kate: Do you want to be a scientist（科学家）？

Tim：

Kate: What do you want to be when you grow up？

Tim: I want to be a bus driver in the morning，a science teacher in the afternoon and a writer in the evening.

Kate: I want to be a writer. 

Tim: Haha.