Last week the manager of an old shop received a letter.As he was very busy, he did not read it until teatime.Then he opened it and 50 dollars fell out onto his desk.Together with it was a short letter.It reads：
Dear Sir，
In 1945，I got engaged, but unluckily I lost my job. At that time a lot of people were out of work.Six months later, I got a job again, but of course I was very short of money.
I came to your shop to buy a wedding ring. The girl in your shop took out some rings for me, but she was called away for a moment, and at that moment, I put one of the rings into my pocket quickly.When she came back, I lied to her that I did not know the size of my girlfriend's finger.Then I left the shop without paying.
My wife died a few days ago and I never paid for her ring. It has been on my conscience all these years.At that time the ring cost 10 dollars, so I think the ring may cost 50 dollars now, and I am sending you the money.
Yours truly，
A customer
“Well, well, well，“Said the manager.”Life is full of surprises.“
-engage [ɪnˈgeɪdʒ]v.雇佣；订婚；预定；参加；从事
典型例句
I have engaged a room at this hotel.
我已经在这个旅馆里预订了一个房间。
最常用法
engage in 从事，忙于，参加
be engaged in 从事于
be engaged to sb 跟某人订婚
联想记忆
engagement n.约会；约定；订婚
-ring [rɪŋ]n.戒指；环；圈；铃声；电话 v.打电话；环绕
典型例句
Please give me a ring after class.
下课后，请给我打个电话。
最常用法
answer the ring 接电话
ring back 回电话
ring off 挂断
联想记忆
call vt.呼叫；打电话 n.打电话
phone n.电话 v.打电话
circle n.圆圈 v.包围
-cost [kɒst]n.费用；成本；代价 v.花费；使付出
典型例句
I’m determined to attain my purpose at any cost.
我决心不惜任何代价达到目的。
最常用法
cost sb.sth.花掉某人……（钱数）；使某人以某物为代价
at a cost of 以……为代价
at all costs 不惜任何代价
at any cost 无论如何
联想记忆
costless adj.不花钱的
charge n.费用 vi.要价
price n.价格；代价；价值
fee n.费用；酬金
fare n.车费；路费
expense n.费用；花费；代价
spend v.花费
pay v.支付
上周一家老店的经理收到了一封信。由于他非常忙，所以直到下午茶的时候他才有时间读了这封信。当他把信撕开的时候，50美元掉在了桌子上，一块儿掉下来的还有一封简短的信。
信上写道：
亲爱的先生，
在1945年的时候，我订婚了，但是不幸的是我丢了我的工作。在那时很多人都没有了工作。六个月后，我又找到了一份工作，当然我那时非常缺钱。
我来到你的店来买结婚戒指。你店里的服务员为我拿出了一些戒指，但她被叫走了一会儿，然后就在那时我迅速的把一个戒指放入了我的口袋里。当她回来后，我对她撒谎说我并不知道我女朋友手指的尺寸。然后我未付钱就离开了商店。
我的妻子几天前死了，并且我从来没有为她的戒指付过钱。这些年来它一直是我的遗憾。在当时它的价钱是十块，所以我觉得它现在可能值50块，并且我把钱寄给了你。
敬上
一位顾客
“哦，”这个经理说，“生活总是充满了惊喜。”