听力原文:Rick? Hi, it's Jack here. Listen, we need you to pull the delivery truck into bay number three when you get to the loading dock. I know you prefer bay two because it's easier to back into, but the motor on the door isn't working. We can't get it opened. There's a repair guy working on it now, but he says it'll be the end of the day before it's fixed. I'm not sure how much you're delivering to us today. If it's a small delivery, I'll unlock the front of the store and I'll help you carry the boxes. Sorry about this. We've never had any problems with our loading dock doors before. Okay, see you later, bye. What is the problem?