I have been using tutorials on YouTube!, , I've been practicing for at least one hour per day., , I've been learning very fast this month., , I have been using my skills with instruments., , We have been sharing each other tips., , She has been listening to us from the very beggining., , Has he been practicing during these days?, , Peter and Mary haven't been studying together., , Have Clair and Simon been sleeping the whole morning?, , We haven't been paying attention to the class., .

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