史上很难解释清楚的一道高中英语单选题。-----如果你不能解释清楚，请不要作答。谢谢

Question

—He got his first book published. It turned out to be a bestseller.
—When was _____ ?
— It was in 2000 when he was still in college.
A：that B：It
我记得老师说过，it代指上文提到过的事情。所以选了B。
结果答案说：that指上文中的He got his first book published. It turned out to be a bestseller. 这件事。所以选A。

我真无语。请教高手，如果你不能解释清楚，请不要解释。谢谢

Answer 1

语言是讲究语境的，it有时是指上文提到的事，有时是指上文提到的物，在本题的上文中事和物都有，如果还用it 就指代不清了，it是指book 还是指He got his first book published. It turned out to be a bestseller.这件事，容易产生歧义。that 很明显就是指 He got his first book published. It turned out to be a bestseller这件事了。

Answer 2

“ It turned out to be a bestseller.”
it 句中所指 He got his first book published。
后句问道 when was 是想问 他出版自己的第一部书，销售很好是在什么时候。
that 就是指 He got his first book published. It turned out to be a bestseller 这整件事。

若继续使用it 有点重复使用的意思 而且表意不明。

追问

如果是教学生，根本不行。还是解释的不好

追答

用that，指代上面所提到的事情；第三句中 it来代替上面的代词that

追问

你的回答越来越离谱了。

追答

这是高考原题 跟你解释不清，很抱歉。