补全对话，每空一词。

A: What are you    1    for vacation?

B: I'm going to Tibet for a week.

A: That    2    interesting! What are you doing there?

B: I'm going    3     in the mountains. How about you?

A: I'm visiting my friend in Nanjing.

B: Oh yeah?    4         5     are you staying?

A: Just     6    a week.I don't like going      7    for too long.

B: Well,      8      a good time!    9     me a postcard from Nanjing!

A: Sure. Show me your photos when we get    10     to school.

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