(完成下列对话,每空格限填一词)

(完成下列对话,每空格限填一词)
Who is the letter from?
It's from our Uncle Mike,Mum's______.
I've never seen him.Where_______he live?
He lives in Beijing.He has a daughter and a______._______are our cousins.
______old are they?
They are the same______as we.They're twelve and fourteen.
Are we going to_____Beijing?
I_____think so.The air tickets are very________.
We can go_______train._____will be cheaper.
That's a good_______