Do you know had reported the accident to the police?A. who it was thatB. who was it thatC

问题补充：

Do you know had reported the accident to the police?

A. who it was that

B. who was it that

C. it was who that

D. that it was who

答案：

(答案→)A. who it was that

B. who was it that

C. it was who that

D. that it was who

解析：这是强调句型，其结构是：It was+被强调部分+that/who+其他。判断强调句型的方法是把It was that这三个词去掉，整个句子不缺成分，意思完整。当被强调部分是连词who时，其顺序是who it was that，故选A。