Previousknow your stuff
Meaning: If you know your stuff, you're very good at what you do, and you know a lot about it.
For example:
- The technician who looks after the computers at our office really knows her stuff. She's great!
- When it comes to growing vegetables, Uncle Ken sure knows his stuff. He's been growing veggies in his back garden for forty years!
Quick Quiz:
We'll soon know how good he is at fixing cars. If he knows his stuff, the car should
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