After Mike's teacher stayed after school to help him his grades improved. But now he's causing problems in class. I told him "don't bite the hand that feeds you" to encourage him to stop. (What does don't bite the hand that feeds you mean?)

We've been talking for a long time but it's time to get down to brass tacks and talk about what we're really here for. (What does get down to brass tacks mean?)

Before I went to the mall with my friends I gave my mom a ballpark figure on when I would be coming home so she knew roughly when to expect me. (What does ballpark figure mean?)

While we took the test my teacher told us that she was keeping an eye on us. She said there's no way we could cheat. (What does keep an eye on mean?)

When someone gets me upset it's hard for me to bite my tongue. I always end up saying something I regret. (What does it mean to bite your tongue?)

I have a test tomorrow. It's time to turn off my phone and hit the books or else I might fail! (What does hit the books mean?)

I smelt a rat when I found my favorite book missing from my locker. Someone had stolen it! (What does smell a rat mean?)

With a new haircut and a new pair of pants, Max felt like a million bucks walking into school today. (What does feeling like a million bucks mean?)

You can keep on trying to convince Chloe till the cows come home, but she won't change her views. (What does until the cows come home mean?)

An earthquake hits only once in a blue moon where I'm from. I was very surprised when there was one last week! (What does once in a blue moon mean?)

Marcus heard that someone was gossiping about his friend, Shelly. Marcus went to bat for Shelly and told the bullies to stop. (What does to go to bat for someone mean?)

When the fire alarm goes off in school, even when it's a drill, we have to get up at the drop of a hat and go outside. (What does at the drop of a hat mean?)