How long has it been since you started your favourite hobby?
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How long have you lived in your country for?
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How long have you spent studying?
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What haven't you done yet today?
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Have you eaten dinner yet?
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Has it ever snowed in your hometown?
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Have you ever tried computer programming?
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Have you ever performed in public?
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Have you met your best friends parents yet?
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Have you ever slept in a tent?
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