问题补充：
—Tom should have been warned not to cheat in the exam.
—, but he wouldn’t listen to me.
A. So he had
B. So has he
C. So was he
D. So he was
答案：
A. So he had
B. So has he
C. So was he
(答案→)D. So he was
解析：句意，这是两个人之间的对话。第一个人说：“Tom本应该被提醒在考试中不要作弊。” 第二个人说： “他确实被提醒了啊，但是他不听我的。” so + 主语 + 谓语，该句式表示“确实如何了”
