break the ice — begin to be friendly wuth people one doesnt know
break the news — inform or give bad news
brush up on — imporve noes knowledge of something through study
bump into — meet unexpectedly
by and large — in general
by heart — by memory
by all means — absolutely ，definitely
by no means — in no way
call off —cancel
cheer up — be happy
come down with — become sick with
come into —receive，especially after anothers death
come up with — think of
count on — depend upon
count out — eliminate
die down — become quiet ，become less
do without — manage without something
drop by — visit informally; pay a short visit every other — alternate
fall behind — lag; fail to accomplish something on time
fall through — fail to happen or be completed
far cry form — completely different from;a long way
feel like — have a desire or wish for
feel up to — feel well enough to or be capabele of
few and far between — not happening often; rate
