推断听众或读者对象 — 英语词汇题
题目
听录音片段（机场广播中的一句话），根据说话内容推断听众对象，并选出填入空格处的最佳词汇："Would all ______ waiting at Gate 12 please proceed to the boarding counter, as flight BA207 to Toronto is now ready for departure." A. passengers B. customers C. patients D. members