can't make head nor tail of sth	not understand sth at all
meet sb halfway	come to a agreement/compromise
come under the hammer	sth is sold at auction, , pójść pod młotek
let your hair down	relax and enjoy yourself, pójść w tango
to make/lose money hand over fist	acquire/lose a lot of money very quickly
have to hand it to sb	admire sb and think they deserve praise
keep out of harm’s way	keep out of danger
do sth at the drop of a hat	be willing / happy to do sth; do sth quickly
make headway	make progress
take heart from sth	feel encouraged by or optimistic about sth
make a hash of sth	do sth very badly
to one’s heart’s content	(Do) as much or as often as one
strike/hit home	achieve the intended effect
after hours	outside regular business hours