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.