Heart of gold
Out of the blue
Feeling under the weather
eleventh hour
around the corner
over the moon
hit the books
birdbrain
hang in there
lend a hand
give it a shot
make up one's mind
speak your mind
beating around the bushes
bear in mind
slip my mind
get cold feet
I'm all ears
at one's fingertips
be in hot water
call it a day
grab a bite
raining cats and dogs
you are what you eat
at the crack of dawn
blow one's top