1. a piece of cake:

something very easy or simple to do

2. in hot water:

in trouble

3. be in two mind about (something):

to be unable to come to a decision about something


4. there is nothing els for it:

there is only one thing to do, there is no choice


5. in seventh heaven:

extremely happy or pleased, delighted


6. like the wind:

very quickly


7. live from hand to mouth:

to have enough money to supply only what is really needed for survival, to be very poor


8. be dead to the world:

to be deeply asleep


9. put heads together:

to discuss something


10. stand on one's own two feet:

to be independent


11. lose touch with (someone):

to stop communication with someone


12. lose one's voice:

to be unable to speak because of having a sore throat, etc


13. not (someone's) cup of tea:

not something that someone likes or prefers


14. eat like a bird:

to eat very little


15. feel at home:

to feel very relaxed, as if one is in one's own home


16. have something on:

to be busy, to have to have another engagement


17. be dying for (something):

to want something very much


18. have a long face:

to look sad or disapproving


19. get the green light:

to receive permission to begin doing something


20. walk in air:

to feel very happy

 

منبع:شهر زبان انگلیسی