问题补充：
As a businessman he was a success, but as a husband he was failure, so their marriage ended in failure.
A. / ; /
B. / ; a
C. a; a
D. a; /
答案：
A. / ; /
B. / ; a
C. a; a
(答案→)D. a; /
解析：考查冠词：句意：做为一个商人他是一个成功的人，但是做为一个丈夫，他是一个失败的人所以他们的婚姻最终以失败告终。第一空填a，a failure是抽象名词具体化，第二空不填，这里的failure是抽象名词，选D。
