It's raining cats and dogs
That was a piece of cake.
That was easy.
I don't feel good.
I have butterflies in my stomach.
I'm nervous.
Hang in there
Don't give up
Break a leg
Good Luck!
Don't spill the beans.
Don't tell my secret.
When pigs fly.
That is not going to happen.
The ship has sailed
You missed your chance
That was the last straw. I'm not going to do this anymore.
That was the last bad thing to happen and now I'm not doing it anymore.
To Lighten Up
To cheer up, to calm down
I'm going to hit the sack.
That costs an arm and a leg.
Doing very little, being very lazy
What is, "Keep a Straight Face".
This idioms means, to try not to smile or laugh.
Call it a day
To end something, stop doing something
He was on pins and needles waiting for his grades.
He is worried about his grades.
Cut somebody some slack
Don't be so critical, give them another chance
She was as hard as nails
This idioms means, she was tough
To find a needle in a haystack
Something that is very hard to find
Blow off steam or let off steam
to do or say something to get rid of strong emotions
Sleep like a log.
What is "Get a grip on yourself".
This idioms means, to get control over your emotions.
We don't see eye to eye.
We don't agree.
Go back to the drawing board