【正确答案】
B
【答案解析】[听力原文]6-8
M: Waitress!
W: Yes? What is it?
M: I ordered 20 minutes ago. I haven't gotten my food yet.
W: What was your order again?
M: A wonton soup, two fried bread sticks and a salted duck egg.
W: I'll see what happened for you.
M: I wish you would. I'm in a hurry.
W: OK. OK. I'll take care of it right away.
[解析] 事实细节题。由I ordered 20 minutes ago可知是20分钟前。