Commit something to memory
Remember
a fish out of water
Uncomfortable
a heart of gold
Kind heart
To eat like a horse
Be very hungry
Once in a blue moon
Rarely
Piece of cake
Too easy
To bite the dust
To fail
In leaps and bounds
Fast
To go bananas
To get mad
To let the cat out of the bag
To spill a secret
To be in a fix
To have troubles
A whole new ball game
Another deal / Different topic
A sore point
hurtful, disappointing
Cool as cucumber
Calm
To be on cloud nine
To be very happy
