We're moving at a snail's pace
We're moving very slowly
Cross your fingers
Wish for good luck
He's in hot water
He's in big trouble
A grey area
Something is unclear
She's giving me the cold shoulder
She's ignoring me
Cool as a cucumber
Calm, relaxed, chill
To pass with flying colors
To pass something with a high score
Cat got your tongue?
Why aren't you talking?
Feeling under the weather
To feel mildly ill or sick
I had a change of heart
I changed my mind
Out of the blue
Happening without a warning
Hold your horses
Hold on, wait
We see eye to eye
We agree
White lie
An innocent lie to protect another person's feelings
A wolf in sheep's clothing
Someone who is pretending to be nice, but is actually not
Head in the clouds
Spacey, distracted
It cost an arm and a leg
It was very expensive