A、He forgot it. B、He was away from the company. C、He was ill. D、He was at work. D对话中，女士询问男士为什么昨晚不去开会，男士回答说他当时忙着工作。由此可见，D)为正确答案。

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?

W: Why didn’t you go to the meeting last night?
M: I was busy with my work.
Q: Why didn’t the man go to the meeting?