从A-G选项中选出能填入空白处的最佳选项补全对话。 (选项中有两项是多余的)

Teacher: OK, now I want to hear everyone's predictions about the future.

Student 1: I think kids won't go to school. They'll study at home on computers.

Student 2: There will always be schools.

Student 1: But at least the 996 work schedule will disappear. We can work both online and offline.

Teacher: Probably.

Student 3: I think there will be more free time.

Teacher: We need to relax.

Student 4: I think I'll be an astronaut.

Student 5: An astronaut?

Student 4: No, I think people will live on other planet.

A. I'm serious. B. I hope so. C. Oh, I disagree. D. That's it. E. Are you kidding? F. That's all. G. What else?