—I’m going to attend your lecture at 9∶30 tomorrow morning.
—I regret to tell you that. When you arrive, it will have ended and I questions with my students.
A. would discuss
B. will discuss
C. will be discussing
D. am discussing
网友回答
A. would discuss
B. will discuss
(答案→)C. will be discussing
D. am discussing
解析：根据题意“当你明天到得时候，演讲将会已经结束，我将正在和学生讨论问题。”可知此题应用将来进行时。