It's a piece of cake
It's very easy
Break a leg
Good luck
Beat around the bush
Avoiding the main subject by talking about irrelevant things
Cutting corners
Doing something poorly in order to save time or money
It is raining cats and dogs
When it rains a lot
As lost as a nun on a honeymoon
It's like when you don't know what you're doing, you're lost
Speak of the devil
when you're talking about someone and this someone appears
Pull yourself together
You must be postured
Cross my heart
I swear
Don't put all your eggs in one basket
Be careful. Don't have just one option
Once in a blue moon
something that happens almost never
To kill two birds with one stone
solve problems in once
Wrap your head around something!
To understand something complicated
Take it with a grain of salt.
Don't believe it blindly, doubt it a little bit
The elephant in the room
The problem people are avoiding.
