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What is he doing? He's cooking.
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What is she doing? She's eating.
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What is it doing? It's running.
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What is she doing? She's reading.
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What is he doing? He's writing.
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What are they doing? They're playing tennis.
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What are they doing? They're watching TV.
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What is he doing? He's drinking.
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What are they doing? They're singing.
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What is she doing? She's sleeping.
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What is he doing? He's writing.