Someone at the gym was yelling at me, saying that I've been using the treadmill for too long. I say:<br/><br/>Sorry, I couldn't hear you. I've been listening to music the whole time.<br/><br/>Or<br/><br/>SOrry, I couldn't hear you. I was listening to music the whole time.<br/><br/>Is this sentence okay?<br/><br/>Thank you.