Sometimes we say things without thinking. Very often a thoughtless remark may hurt others' feelings or
cause a misunderstanding or an embarrassment. We must, therefore, always think before we speak.

Once I told an old friend how beautiful his girlfriend looked when I saw them together at a movie theater
the other day. Unfortunately, I made a mistake. It happened that she wasn't with my friend. She was with
someone else. I had let the cat out of the bag, so to speak. I'd never been so embarrassed in my life. I
certainly learned my lesson, but at a very high price. His girlfriend never spoke to me again! And to make
matters worse, it is rumored that they eventually broke up.

halfway adv.在中途 Do not give up halfway. persistent 持久的
look before you leap 三思而后行
Anyone likes Sam, because he is so thoughtful of others.
make a remark make a statement (正式)
the other day 最近幾天前的一天 cinema (文謅)
error = mistake n. mistake A for B 誤將A當B
It happened that... = It turns out that .... 原來是
let the cat out of bag = reveal the secret 泄露秘密
Bruce is a scholar, so to speak. 可以這么說
learn one's lesson 學了教訓
cheat on sb 對...不忠