What __________ in your free time?
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you do
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do you do
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are you doing
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does you do
B
Correct answer
Explanation
This is a present simple question asking about regular activities. The correct structure is "What do you do" using the auxiliary "do" + subject + base verb. "You do" is not a question structure, "are you doing" is present continuous (for right now), and "does you do" is grammatically incorrect ("does" requires third person singular).