Idioms 1 - What does it mean?
Idioms 2 - What does it mean?
Idioms 3 - What does it mean?
What is the idiom 1?
What is the idiom 2?
100
It's a piece of cake.
It's easy
100
I'm in a pickle
I'm in a difficult situation
100
Let's call it a day.
Let's finish/go home.
100
We are in the same position/situation.
We are in the same boat
100
I am so very happy.
I'm on cloud 9
200
It's raining cats and dogs
It's raining very hard
200
Please don't breathe a word.
Don't tell it to anyone.
200
I let my friend off the hook
I forgave my friend
200
Time passes quickly
Time flies
200
I'm not feeling well.
I'm under the weather
300
I am head over heels for him/her.
completely in love
300
The grass is greener on the other side.
The other side (of the situation) looks better.
300
Get here on the double
hurry up
300
Wait 
hold your horses
300
He died.
He kicked the bucket
400
I am drawing a blank
can't remember
400
You need to pull yourself together.
You need to calm down
400
I am going to hit the hay
I'm going to sleep
400
very good, the best
It's the bee's knees
400
Making/Earning money for your family.
Bringing home the bacon
500
I let the cat out of the bag.
I accidentally shared the secret.
500
I'm all ears
I'm listening carefully
500
Put all your cards on the table
be honest
500
Following the wrong course of action/making a mistake
You are barking up the wrong tree
500
To manage all your work/responsibilities well.
I'm on the ball.