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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