—You have made a lot of mistakes in the exam.——I’ll give you a second chance.A. You mus

—You have made a lot of mistakes in the exam.
— 
—I’ll give you a second chance.
A. You must be kidding.
B. I’m afraid not.
C. How come?
D. What should I do?

A. You must be kidding.B. I’m afraid not.C. How come?(答案→)D. What should I do?解析：这是一段师生间的对话。从第三句话判断要填的应该是个问句,学生问老师“那我该怎么做？You must be kidding.你一定是在骗我；How come?怎么会呢？不符合语境。

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