A、9:30 pm. B、9:45 pm. C、10:00 pm. D、10:15 pm. B男士询问女士飞机起飞的时间，女士告诉他是晚上十点差一刻。由此可知，飞机起飞的时问是9：45。a quarter表示时间时意为“一刻钟”。

W: Well, we have waited for Mary for 45 minutes.
M: Take it easy. Just stay another ten minutes.
Q: How long will they wait for Mary in total?

M: Excuse me. Could you tell me what time the plane leaves?
W: Certainly. It leaves at a quarter to ten in the evening.
Q: When will the plane leave?