The student is busy as a bee
working really hard
I know the test is hard. Hang in there!
Keep going! You can do it!
We had to go inside, it was raining cats and dogs.
It was raining really hard.
He's really on the ball!
He's focused
He has his head in the clouds
He's not paying attention
Break a leg!
Good luck
Stop pulling my leg!
Stop joking with me.
She hit the nail on the head!
She did it perfectly! (She nailed it!)
She has butterflies in her stomach.
She's nervous
The test was a piece of cake.
It was super easy.