2022.06.28
BBC Learning English - The English We Speak
to let the cat out of the bag
-when we say 'you mustn't let the cat out of the bag', it means that something is a secret and that you mustn't tell anyone.
We need to keep this quiet! If anyone lets the cat out of the bag there'll be trouble!
We were going to have a surprise birthday for dad, but my silly brother let the cat out of the bag the day before.
Well the cat's out of the bag now. Everyone knows Amy will be given the lead role.
line-up
- line-up refers to all the bands that are playing in a festival
Man: Is Jones playing this weekend?
Man 2: No, he's still injured so he's not in the line-up.
headline
- to be the main act in a festival
Oh OK, right! Well, for everyone who is going to a music festival this year, we hope you have a fantastic time. I hope that the line-up is great and that the headline act doesn't disappoint. Bye!