1. rags-to-riches story
2. when pigs fly
3. bite my tongue
4. lose your head
5. slip of the tongue
6. a wolf in sheep's clothing
7. stuck between a rock and a hard place
8. everything but the kitchen sink
9. starting from scratch
10. inside and out
11. beat around the bush
12. put your best foot forward
13. at the drop of a hat
14. all bark and no bite
15. burning the midnight oil
16. a piece of cake
17. back to the drawing board
18. i have bitten off more than i can chew
19. cash cow
20. it costs me an arm and a leg
21. let's not go crying over spilt milk
22. actions speak louder than words
23. there's no use in beating a dead horse
24. blood is thicker than water
25. practice makes perfect
办公室英语50句
