student asking question

When do you use "run out"?

teacher

Native speaker’s answer

Rebecca

"Run out" means "used up a supply of something". Therefore, you can use the phrase "run out" when a quantity of something is gone. Ex: I've run out of flour, so I can't bake a cake today. Ex: I don't like my shampoo, but I'm still going to use it until it runs out.

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