3.beat a dead horse白搭口舌，白吃力气
I’ve already made up my mind. There’s no sense beating a dead horse.
Put your John Hancock right here.
5.keep it under raps保密
Don’t tell anyone about the party. Let’s just keep it under eraps.
Let’s kick around a few more proposals before we come to a final decision.
The junkie stole money in order to buy more drugs.
I’ve never seen anybody put away so much food and still look so thin.
9.put a move on撩拨
He tried to put the moves on her, but she turned him down.
10.put one’s ass on the line两肋插刀，不吝悉数
I put my ass on the line for you. I know you’ll do the same for me someday.