Break a leg
good luck
throw in the towel
give up
its raining cats and dogs
its raining very hard
In hot water
In trouble
Throw down the gauntlet
Challenge someone boldly
under the weather
feeling sick
on the same page
the same activity something
take it with a grain of salt
Don’t fully believe something
Having Butterfly in your stomach
Your nervous
Burn one’s bridges
Destroy relationships or chances permanently
Hit the books waiching
start studying waiching
miss the boat
miss an oppurtunity
Put a sock in it
Stop talking / be quiet (a bit rude)
By the skin of your teeth
Barely succeed
Tilting at windmills
Fighting imaginary problems
spill the beans
reveal the secret
pull someone leg
to joke or prank
Barking up the wrong tree
Believing in the wrong idea or blaming the wrong person
Let sleeping dogs lie
Don’t bring up old problems
Rob Peter to pay Paul
Solve one problem by creating another
peace of cake
very easy
the ball is in your court
to decide or act
Throw someone under the bus
Betray someone to save yourself
Face the music
Accept consequences
Carry coals to Newcastle
Do something unnecessary