She told him she'd spent all her savings but he DIDN'T BAT AN EYELID.
NOT BAT AN EYELID: To show no sign of surprise or worry when something unexpected happens.
These discussions may well OPEN THE DOOR TO a peaceful solution.
OPEN THE DOOR TO SOMETHING: To make something possible.
When she started borrowing my clothes without asking, I had to PUT MY FOOT DOWN.
PUT YOUR FOOT DOWN: To use your authority to stop something happening.
The review in the paper SINGS THE MOVIE'S PRAISES.
SING SOMEONE'S/SOMETHING'S PRAISES: To praise someone or something with enthusiasm.
I've tried EVERYTHING UNDER THE SUN on this stain, but I just can't get rid of it.
ALL...THE/EVERYTHING UNDER THE SUN: Everything that exists or is possible.
