阅读下面的对话，根据上下文，选择恰当的选项补全对话，使句意完整、符合逻辑。（其中有两项为多余选项）

A: What's the matter, John?

B: I'm thinking about going somewhere nice after the exam with my parents.

A: Why don't you go to Dunhuang?

B: We went there last summer. We also went to Mingsha Mountain, Crescent Spring and Yumen Pass.

A:The beach city is a perfect place for the summer holidays.

B: It's a lovely place, but it's a bit far away from here.

A: Well, you'd better find some advice for a short trip in a travel guide.

B:Thank you.

A: You're welcome.

A. You can go to the Mogao Caves.

B. Do you have any ideas?

C. I don't feel like it.

D. What about Qingdao?

E. That's a good idea.

F. Why don't you go skating?

G. We want a short trip.