根据对话情景，在空白处填入恰当的句子，使对话完整通顺。
A: You look unhappy, Gina._______1_________ ?
B: My uncle is ill in Green Hospital. I need to see him, but I don't know where the hospital is.
A: _______2_________ . Let's ask the policeman over there.
Excuse me, sir. ________3________Green Hospital?
C: Go down this street, and then turn right. At the end of the street you'll see it.
A: Can we take a bus there?
C: Yes, the No. 2 bus will take you there. Look! The bus stop is over there.
A: _______4_________ ?
C: About half an hour.
A: OK, thank you so much.
C: ________5________ .