What are you doing? VS What have you been up to? - English Experts

What s the difference between those two sentences? For me both means exactly the same. PS: I already know that up to can also mean aprontar . But I m not asking this question in terms of this meaning, but the normal meaning. Thank you in advance.

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What have you been up to? How to Answer this Common Small Talk Question

for ENGLISH experts.find in the sentences ( given in the attachment) whether the underlined verbs are

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