i: good morning/afternoon. i'm ... and this is my colleague .... s/he's just going to listen to us. could i have your mark sheets, please? (to a) what's your name? where are you from? a:回答
i: thank you. (to b) and you? b:回答
i: thanks. do you work or are you a student, b? b: 回答
i: (what do you do? what do you study?) b:回答
i: what about you, a? (what do you do? what do you study?) a: 回答
i: what do you like most about your job/studies, a? a:回答
i: (why?) a:回答
i: what about you, b? b:回答