根据语境，用恰当的语言完成对话。
(On June 21, 2010, after the big test, Lanlan is talking to Kangkang)
Lanlan = L Kangkang = K
K: Hi, Lanlan, you look so happy today. Why all the smiling faces?
L: I think I have done well in the English exam. What's more, I'm going to Shanghai to visit the Expo Garden.
K: 1. ! When are you leaving for Shanghai?
L: Next week.
K: 2. ?
L: About half a month.
K: How do you manage your trip?
L: I will go and see the Expo Garden, visit some places of interest and also become a volunteer.
K: 3. ?
L: Because volunteers can improve my English. Once I find people in need, I decide on suitable ways to help
them from all over the world. 4. ?
K: Yes, I'd love to. But I plan to see my sick grandfather in my hometown with my parents.
L: 5. . I hope everything goes well.
K: Thanks a lot.
