选择合适的句子,补全对话。

A. Wow, so beautiful. B. When are we getting to the top? C. We are at Blue hill. D. Can we find the diamond? E. What are you doing?

Alice:   Peter?

Peter: I'm reading a map.

Alice: Where are we now?

Peter:

Alice:

Peter: In half an hour.

Alice:

Peter: I think we can. Look, the lake is like a big diamond.

Alice: