根据对话内容，从选项中选出最佳选项。每个选项只能选用一次，注意其中有两项为多余选项。
A: Mark, what are you doing there?

B: Della. I'm reading a book written by Mo yan.

A:

B: Yes, reading books can help me greatly.

A: Really?  But how will you make your dream come true？

B: I will keep reading and writing stories.

A: That's a good idea.

B: What are you going to be, Della？

A:

B: Good!

A. I want to be a doctor. B. You are good at writing. C. Do you like reading books very much? D. My dream job is to be a writer. E. Why are you going to be a writer? F. That's great! G. Let's try our best to make our dreams come true.