1. a spitting image--the exact resemblance to someone.
Eg: My brother is the spitting image of my mother.
2. a crying shame-- a sad or an unfortunate situation.
Eg: It was a crying shame that he did not get the managerial position.
3. a nagging doubt--a disturbing and uneasy feeling that something is not right.
Eg: Even though he was pronounced guilty in court, I had a nagging doubt that he was innocent.
4. a saving grace--something that saves someone or something that would otherwise have been an utter disaster.
Eg:The team's only saving grace was the captain. The game would, otherwise, have been lost.
5. all the rage-to be in current/new fashion.
Eg: Her new skirt was all the rage throughout the year.
6. a labor of love--something done for personal pleasure and not for the pleasure of money.
Eg: His teaching is a labor of love and he doesn't expect any pay from doing it.
7. with a vengeance--with determination.
Eg: The ----- team came out with a vengeance after the break and easily won the game.
8. swallow one's pride--to become humble.
Eg: He was in deep debt and had to swallow his pride and ask his father for some money.
9. in good/bad faith--honest/bad intentions.
Eg: Act in good faith and he will believe you.
10. a vested interest--a special interest in an arrangement/something for particular personal reason.
Eg: As a propreitor of the company, he had a vested interest in making the business run smoothly.