选出合适的选项填入横线上。

A. How long will you stay there? B. I'll go there in August. C. What are you doing? D. Because I'll visit my e-friend in Australia.

Jack: Heilo, Ben.

Ben: I'm looking for books about Australia.

Jack: Why?

Ben:

Jack: Really? I went to Australia last year. I have some photos about Australia.

Ben: That's wonderful. Can you show me some photos?

Jack: Sure. I'll bring them to school tomorrow. When will you go?

Ben:

Jack:

Ben: For two weeks.