补全对话

A: Hello! This is Mary.

B: Hi, Mom!

A: Oh, Linda!

B: I'm in a beautiful village.

A: Really? That's great.

B:

A: Oh, I see. What about your classmates Tom and Helen?

B: Tom is taking photos and Helen is talking to a villager.

A: I hope you have a good day.

B: Bye!

A: Bye, Linda!

A. Thank you, Mom. B. What are they doing now? C. We're on a school trip. D. Sounds good. E. This is Linda. F. Where are you now? G. What are you doing now?