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bought vs brought

The word "bought" the past tense of the verb to buy
For example: "I bought a newspaper at the newsagents. "

The word "brought" is the past tense of the verb to bring
For example: "She brought her homework to the lesson."

! As a child I used to struggle to remember this one, until my teacher pointed out that there is an 'r' in brought and an 'r' in bring, so they belong together, but there is no r in bought and no r in buy, so they belong together too.