Like two peas in a pod
They're always together
Every cloud has a silver lining
Good things come after bad things
Costs an arm and a leg
Very expensive
Barking up the wrong tree
To be mistaken, to be looking for solutions in the wrong place
Give someone the cold shoulder
Ignore someone
Have a bun in the oven
Being pregnant
On cloud nine
Very happy
The early bird gets the worm
The first people who arrive will get the best stuff
Take a rain check
Postpone a plan
Don't mention it
You're welcome
Take something with a pinch of salt
Don't take it to seriously
Miss the boat
It's too late to do it
Spill the tea
To share a gossip or secret information
Fit as a fiddle
In good health
Break a leg
Wish someone good luck
Speak of the devil
When someone appears after they were mentioned