单选题 Speaker A: Excuse me. I'd like to exchange this watch. I just bought it, but look at this.Speaker B: ______
【正确答案】 B
【答案解析】A方的话显示对话的场合是在商店,A项和C项与此对话场景无关,D项用在这一场合很不礼貌,B方作为营业员不可能如此答复。B项是这一情景下的正确答案。