英語會話學習

以下句子的英文怎麼說?

1. 我沒辦法用兌幣機，因為機器故障了。
   I couldn't use the change machine because it was out of order.
2. 我有急事找他
   I have urgent business with him.
3. 巴士站離市中心有多遠？
   How far is the bus station from the city center?