Cross that ... when you come to it.
Cross that bridge when you come to it.
Take it with a ... of salt.
Take it with a grain of salt.
Every cloud has a ... lining.
Every cloud has a silver lining.
Don't put all your eggs in one ....
Don't put all your eggs in one basket.
It's a ... of cake.
It's a piece of cake.
Actions ... louder than words.
Actions speak louder than words.
The best thing since ... bread.
The best thing since sliced bread.
The ball is in your ....
The ball is in your court.
... the hook.
Off the hook.
Once in a ... moon.
Once in a blue moon.
As ... as a rock.
As solid as a rock.
At the ... of a hat.
At the drop of a hat.
You're ... up the wrong tree.
You're barking up the wrong tree.
It's a ... in the bucket.
It's a drop in the bucket.
Let ... dogs lie.
Let sleeping dogs lie.
It's the ... of both worlds.
It's the best of both worlds.
I ... a rat.
I smell a rat.
Kill ... birds with one stone.
Kill two birds with one stone.
Bite off more than you can ....
Bite off more than you can chew.
... the hatchet.
Bury the hatchet.
Let's ... the knot.
Let's tie the knot.