A basic rule you have to follow
Define "buckle down"
Working hard with determination and full attention.
Define "drawing a blank"
Unable to remember or recall something.
Use "when pigs fly" in a sentence.
Define "face the music"
To accept responsibility for something bad you have done
When the person you have just been talking about arrives.
Example: "She didn't want to do her homework now, but knew it would be better for her in the long run."
Define "white as a ghost"
Someone visibly in a state of fear or anxiety
Define a "taste of your own medicine"
Something happens to you, or is done to you, that you have done to someone else.
Use "kill two birds with one stone" in a sentence
Example: "We can kill two birds with one stone, by dropping the mail off on our way to the grocery store"
Define "whole 9 yards"
Everything. All of something.
Use "it cost and arm and a leg" in a sentence.
Define "cold feet"
To get nervous or to have second thoughts about doing something
Use "bite the bullet" in a sentence.
To pass away
Use "wear your heart on your sleeve" in a sentence.