cost an arm and leg	be very expensive (body)
see eye to eye	get on with each other
keep a straight face	look serious
put your foot down	say no to sth
can't face	dont feel like, feel unable to
get your head around	understand
keep an eye on	pay attention to sth
put your foot in sth	say the wrong thing
catch your eye	attract your attention
face to face	very close to
get cold feet about	change your mind
break away	escape from
break in	interrupt// enter a building by force
break off	end sth suddenly
break out	start suddenly (violate events)// loose control of feelings
break down	fail to function
break with	give up sth
break through	make a discovery// appear
break up	end a relationship
become of	happen to
blink at	show surprise at
bank out	depend on
blow over	stop
book up	reserve
bear out	support the truth of
blow up	explode
brush up	improve
build up	collect
black and blue all over	covered with bruises
behind bars	in prison
full of beans	very lively
drop a brick	do/ say sth tackless
browned off	fed up
brainwave	sudden, clever idea
out of the blue	suddenly and unexpectadly
break even	show neither loss nor profit
cost a bomb	be very expensive (no body)
by and large	on the whole
in cold blood	with no emotions
beat about/ around the bush	avoid saying directly
take the bull by the horns	meet with the challenge without hesitance
ring as bell	seem familiar/ remind sb about sth
lay bare	reveal
blue-eyed boy	favourite child
(hang) in the balance	(be) uncertain
be broke	have no money
in sbs black books	unpopular
make a clean breast of sth	confesss th
bolt from the blue	come suddenly
in black and white	in the written form
kick the bucket	die
get your own back	take revenge
blessing in disguise	sth positive, although seeming negative at the beginning
make sbs blood boil	make sb agressive, angry
feel sth in your bones	feel instinctively
bark up the wrong tree	make mistake
butter the boss up	flatter to a boss
hold your breathe	wait impatiiently
caught red-handed	caught while doing sth bad
deal a blow to	destroy
by and large	on the whole, generally speaking
see the back	see sb leaving
chip off the old block	sb similar to the one of hisparents
a wet blanket	sb spoiling sbs fun
big-headed	conceited, too self cofindent
above board	an honest person