补全对话，从方框中选出适当的句子，完成对话。

A. Here you are. B. When did you go there? C. Have you ever visited it? D. Did you have a good time? E. Brilliant! F. What are those on your desk?

A: Hey, Steven.．

B: Oh, they are some photos I took in Guizhou.

A:．

B: In March. I went there to visit my uncle.

A: ．

B: Oh, yes. My uncle took me to visit Huangguoshu Waterfall. It's one of China's largest waterfalls. ．

A: No, never. May I have a look at the photos?

B: Sure.．