Idioms for newly B1 students

just barely
Example 1: I woke up late and caught my flight by the skin of my teeth.
Example 2: He passed the difficult physics exam by the skin of his teeth

uncomfortable
Example 1: As a small-town girl moving to New York City, I felt like a fish out of water.
Example 2: He does not know anything about politics, so he felt like a fish out of water at the dinner party.

silly or dishonest behaviour
Example 1: The teacher told the students to stop the monkey business and start studying.
Example 2: I suspect there is some monkey business going on with the company financial records.

get nervous
Example 1: He wanted to try skydiving but got cold feet right before stepping out of the plane.
Example 2: The couple canceled the big wedding because the groom got cold feet.

agree
Example 1: Let us have a quick meeting to ensure the whole marketing team is on the same page.
Example 2: We need to talk about our budget so that we are on the same page regarding spending.

very quickly
Example 1: The ambulance arrived in a flash after we called emergency services.
Example 2: The summer vacation went by in a flash, and now it is time for school.

Agree
Example 1: My boss and I do not always see eye to eye on company policy.
Example 2: After a long discussion, the business partners finally saw eye to eye on the budget.

Release anger
Example 1: After a stressful day at work, I went to the gym to blow off some steam.Example 2: Let him shout for a minute; he just needs to blow off some steam.

Good luck!
Example 1: You are going to do great in the play tonight, so go out there and break a leg!
Example 2: I know you are nervous about your solo dance routine, but break a leg!