——What made him so upset?——she failed in her examination A. WhatB. ThatC. BecauseD. Whethe

问题补充：

——What made him so upset?

——she failed in her examination

A. What

B. That

C. Because

D. Whether

答案：

A. What

(答案→)B. That

C. Because

D. Whether

解析：主要测试主语从句。由具体语境可知译文：-----什么让他如此不高兴？----考试失败了（让他如此不高兴）。从句子的语境可知第二句属于紧称上文的省略，完整的句子应该是——she failed in her examination ( made him so upset )，另外结合此句子可知不缺少成分，只需要引导主语从句的引导词that即可。以后遇到此类试题时可以利用还原的方法来解决：即把句子还原，也就是把省略的部分给它不上去。