Kill two birds with one stone
Succeed at two things with one action
Piece of cake
Very easy
Break the ice
Start a conversation
Ten out of ten
Perfect score/doing well
Go with the flow
Be adaptable/open to change
The elephant in the room
The obvious thing we are ignoring or talking around
Cry over spilled milk
Complain about something passed
Under the weather
To be sick
Put two and two together
Figure something out
Go the extra mile
Do extra
Hold your horses
Bring home the bacon
Earn money
Raining hard
Single success never to be repeated
Go out on a limb
Take a risk
Let the cat out of the bag
Reveal a secret
In a pickle
In a difficult situation
Every cloud has a silver lining
Recognizing the good in bad situations
Dressed to the nines
Very well-dressed
Go back to the drawing board
Start over
A little bird told me
Heard a secret
Spill the beans
Reveal something secret
Steal someone's thunder
Take credit for someone else's achievement
At sixes and sevens
Confused
Go bananas
Go a bit wild