---How could you be so rude as to walk in here in the middle of my class?---A. Nothing muc

问题补充：

---How could you be so rude as to walk in here in the middle of my class?

---

A. Nothing much

B. Nothing serious

C. Never again

D. Never mind

答案：

A. Nothing much

B. Nothing serious

(答案→)C. Never again

D. Never mind

解析：句意，这是两个人之间的对话。第一个人说：“在我正上课时，你居然走到了这儿来，你怎么这么没有礼貌。” 第二个人说： “再也不会了。”Nothing much 非常少 Nothing serious没什么严重地 Never again再也不会了Never mind没关系，故选C。