to decide that you have finished doing something
call it a day
to be very expensive
cost an arm and a leg
to go to bed
hit the sack
it's used to wish someone luck
break a leg
something that will never happen
when pigs fly
the latest problem in a series of problem, that makes a situation impossible to accept
the last straw
agree with each other
see eye to eye
to feel ill
to be under the weather
tell people secret information
spill the beans
something that is very easy
a piece of cake