1. crunch time
2. get out of hand
3. step up your game
4. pull yourself together
5. once in a blue moon.


1. A critical period of time when it is necessary to work hard and fast.

2. If a situation gets out of hand, it cannot be controlled any more.

3. "step your game up" means improving one's skills or talents.

4. to become calm and behave normally again after being angry or upset

5. To do something “once in a blue moon” is to do it very rarely

~ Comment:

Perfect!  Study harder Jae Kyung! Keep up the good work! :)