根据对话内容，从方框内的选项中选出能填入空白处的最佳选项，其中有两个为多余选项。

A. Is it hot there in May? B. Thank you for your advice. C. Do you have any good ideas? D. I will make a travel plan soon. E. The weather there is nice in May. F. By the way, can I take the train there? G. I went to Harbin, a city in the northeast of China.

A: Hey, Betty. Where will you go on May Day holiday?

B: I'm not sure.

A: Mount Huangshan is a good choice.

B: Will there be lots of people?

A: It's hard to say. You'd better go there one day earlier.

B:

A: Of course. Going there by train is the best way.

B: That's great!

A: Oh, remember to wear comfortable shoes, because you may climb the mountain for a long time.

B: I'll add this to my travel plan.

A: Have a good trip.