He has been boating for four hours., We have been skating since eleven o’clock., Lucy has been learning this poem for twenty minutes., You have been writing this article since afternoon., My parents have been working in the hospital for thirteen years., The music has been playing for three hours., We have been speaking since five o’clock., Beth has been taking a bath for thirty-five minutes., They have been preparing for the test for two days., The baby has been crying for half an hour..

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