阅读下列对话，从方框里选择适当的单词填空，把对话补充完整。
did, how, went, stayed, Who, What, How long
A: What 【小题1】 you do during the summer holiday?
B: I 【小题2】 to Beijing.
A: Wow. That’s wonderful. 【小题3】 did you go with?
B: I went there with my parents.
A: And 【小题4】 did you go there?
B: We went there by plane.
A: 【小题5】 did you stay there?
B: We 【小题6】 there for three weeks.
A: 【小题7】 do you think of Beijing?
B: I think it’s a beautiful city. And I like the Beijing Duck very much.
A: I think I will go to Beijing next holiday.