James thought Chris told his secret to the class, but Chris told him that he was barking up the wrong tree.
Barking up the wrong tree - looking for answers in the wrong place
These kindergarten students look like they have ants in their pants! They have a hard time sitting at their seats.
Ants in pants: can't sit still
Gary cut corners on her science project so that she could be the first one done. As a result, she lost several points on her overall grade.
Cut corners: to do something quickly yet badly in order to get it done
Stop beating around the bush and tell me what the bad news is.
Beating around the bush: To avoid saying something because it is uncomfortable
I lost my phone on the same day my best friend told me she was moving away. It was like adding insult to injury.
Insult to injury: making a bad situation worse
Hailey said she'd make the poster for our group project but she forgot. She really dropped the ball on this one.
Dropped the ball: made a mistake and let others down
When Tim's parents surprised him with tickets to Disney World, he was on cloud nine.
On cloud nine - extremely happy
"Is your choir concert tonight? Well, break a leg!"
Break a leg: good luck
It's been a long day and I'm exhausted. I'm going to hit the sack.
Hit the sack: go to bed
When I moved from my small town to New York City, I felt like a fish out of water.
Fish out of water: Feeling uncomfortable in an unfamiliar/new situation
Please stop wasting my time with this issue. I have bigger fish to fry.
Bigger fish to fry: more important things to do
Sammy and Phil have been engaged for years. It's about time they tied the knot!
Tie the knot: get married
When the announcements come on, I expect you to be all ears.
All ears: Ready to listen
Since we have not met before, I will break the ice and introduce myself.
Break the ice: to say or do something to make someone feel more comfortable
On the house: free; at the manager's expense