... your tongue.
Bite your tongue.
Cross that ... when you come to it.
Cross that bridge when you come to it.
As ... as a rock.
As solid as a rock.
A leopard can't ... its spots.
A leopard can't change its spots.
I'll be glad to see the ... of him.
I'll be glad to see the back of him.
The ball is in your ....
The ball is in your court.
... the hatchet.
Bury the hatchet.
Bite off more than you can ....
Bite off more than you can chew.
You're ... up the wrong tree.
You're barking up the wrong tree.
Close, but no ....
Close, but no cigar.
Let ... dogs lie.
Let sleeping dogs lie.
I ... a rat.
I smell a rat.
Feeling ... the weather.
Feeling under the weather.
... on the bandwagon.
Jump on the bandwagon.
... the hook.
Off the hook.
At the ... of a hat.
At the drop of a hat.
Once in a ... moon.
Once in a blue moon.
Kill ... birds with one stone.
Kill two birds with one stone.
Curiosity ... the cat.
Curiosity killed the cat.
Let's ... the knot.
Let's tie the knot.
The best thing since ... bread.
The best thing since sliced bread.
It's the ... of both worlds.
It's the best of both worlds.
She's a ... horse.
She's a dark horse.
It's a ... of cake.
It's a piece of cake.
Every cloud has a ... lining.
Every cloud has a silver lining.
It's a ... in disguise.
It's a blessing in disguise.
Don't put all your eggs in one ....
Don't put all your eggs in one basket.
Actions ... louder than words.
Actions speak louder than words.
Take it with a ... of salt.
Take it with a grain of salt.
Sit on the ....
Sit on the fence.
Burn the ... oil.
Burn the midnight oil.
It's a ... in the bucket.
It's a drop in the bucket.