What are you doing this evening?
你今晚打算做什么？
What are you doing at the weekend?
你打算周末干什么？
What are you doing at half-term?
你期中假打算干什么？
What are you doing? Are you out of your mind?
你在干什么？你疯了吗？
All right, who are you and what are you doing in my office?
喂，你是谁，在我的办公室做什么？