Совмести цифры и буквы17. Wrap your head around somethingA. just barely18. Pull Someone's legB. very expensive19. By the skin of your teeth20. Costs an arm and a legC. we agreeD. understand something complicated21. Hit the nail on the head22. Have your head in the cloudsE. offend another personF. get something exactly right23. We see eye to eye24. Break a leg25. Put one's foot in mouthG. good luckH. involved in many activitiesI. joke strith someone26. A finger in every pieJ. not be concentrating