Question

请解答这道题

12. Mary was punished by the headmaster. That was _____the school rules.
A. why B. because of C. the reason why D. because
给的答案是D。但是觉得不是那么回事。选别的，有宣布出来。希望大家帮忙研究研究

Answer 1

有什么不对的。因为学校规定（裁定）的，这里rule是动词。

Answer 2

B吧 because 后面不是应该接句子么 怎么会是D