When we talk about past events we usually use the simple past tense. Read this famous children's story and change the simple tense verbs (in orange) to the simple past tense:
Jack and the Beanstalk
Once upon a time there _live_ a poor widow and her son Jack.
All they _have_ was a cow called Daisy.
When the cow _stop_ giving milk, Jack's mother _tell_ him to take their cow to the market and sell it.