Task: Text Completion
Input (English): Although he is the only one in the gym, there are two people standing behind him at the reception desk. after some time <sep> (A) , the conversation from earlier comes back to him that it says to leave his cell number with people eventually, so he removes his phone from his ear. (B) , the guy begins to workout on the machine and shows its function, while a man walks back and forth into the room from the side door of the gym. (C) , he arrives with two young girls and a in a large gym area where many people are standing. (D) , the boy appears and starts swinging a basketball on a stick and gets a perplexed look from him.
Output (English): B