从所给句子中选出适当的句子补全对话，有两项是多余的。

A. I don't think so. B. How will people go to work or travel? C. Where do you come from D.I think people won't need money. E. Where will they study? F. Yes, I think so G. How will people go to work or travel?

A: Hello, everyone! Today we're going to talk about prediction in the future.

B: Well, Miss Green, I think students won't go to school in 50 years.

A: 

B: They'll study on computers at home.

A: Yes. There will be more free time for students to do what they want. Do you think so?

B: There will be more and more robots working for people.

A: Oh, that would be nice.

B: They'll fly rockets(火箭) to work or travel.

A: Sounds interesting! Tell me what your prediction is?

B: . Everything will be free. It will be a wonderful future world!