When you want to talk about events that have already happened, you use the past tense.
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Missed the previous lesson? https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs/v/present-tense-verbs-the-parts-of-speech?utm_source=YT&utm_medium=Desc&utm_campaign=grammar
Grammar on Khan Academy: Grammar is the collection of rules and conventions that make languages go. This section is about Standard American English, but there's something here for everyone.
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