1. My mother used to worked at a restaurant 3 years ago but now she doesn’t.
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2. He didn’t used to be the president of Student Union.
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3. There used be many tree-lined streets in my hometown but now there is none of them.
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4. My husband didn’t use do housework but now he does.
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5. Children didn’t used to play with high-tech devices at an early age but now they do.
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