13. I'd like some coins for this note.
我想把这张纸币换成硬币。
还能这样说：
I want to change this note to some coins.
Please change this note to some coins for me.
应用解析：
change one's note 改变态度；
sound a false note 做得不恰当；
take note of 注意到；
take short-hand notes (of) 用速记记下来
14. Keep this exchange memo.
把兑换单收好。
还能这样说：
Keep the exchange memo well.
Put away the exchange form.
15. Would you please show me your passport?
请出示你的护照。
还能这样说：
Please show me your passport.
Your passport, please.
应用解析：
by a show of hands 举手表决；
have a show of 有机会，有可能；
in show 外表上
16. What exactly should I do with the foreign currency left with me?
如果兑换的外汇用不完该怎么办？
还能这样说：
What if I have some redundant foreign currency?
What should I do if the foreign currency doesn't give out?
应用解析：
a left-handed compliment 暧昧的恭维；
left wing 左翼；左派；
right and left 到处
17. Here is your American currency.
这是您的美元。
还能这样说：
Your American currency, please.
This is your American currency.