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to sit up and take notice
01
to suddenly become attentive or alert, often due to something surprising or remarkable
Ejemplo
The recent changes in the market have made investors sit up and take notice.
The loud crash made everyone in the room sit up and take notice.
Past tense: The unexpected news made everyone sit up and take notice.
They were sitting up and taking notice of the beautiful sunset when the phone rang.
When the professor mentioned the upcoming exam, the students immediately sat up and took notice.
