It’s raining cats and (blank)
dogs
The straw that broke the (blank)’s back
camel's
Sometimes I feel like a (blank) out of water
fish
The early bird catches the (blank)
worm
I’m going to relax and just be a couch (blank)
potato
It’s no use crying over spilt (blank)
milk
He’s the black (blank) of the family
sheep
I don’t like opera music, it’s not my cup of (blank)
tea
Be careful with my camera, it cost me an arm and a (blank)
leg
Curiosity killed the (blank)
cat
You can’t make an (blank) without breaking some eggs
omelett
Printer ink is worth it’s weight in (blank)
gold
Nobody wants to talk about the (blank) in the room
elephant
The exam was easy, it was a piece of (blank)
cake
There’s no such thing as a free (blank)
lunch