—He got his first book published. It turned out to be a bestseller. —When was ? — was in

—He got his first book published. It turned out to be a bestseller.
—When was ?
— was in 2000 when he was still in college.
A. that; This
B. this; It
C. it; This
D. that; It

A. that; ThisB. this; ItC. it; This(答案→)D. that; It解析：句意：第一个人，他的第一本书出版了。它被证明是很畅销的书。第二个人，那是什么时候的事？第一个人，那是在2000年，他还在读大学的时候。第一个空，用that替代名词，用以替代前面所说的单词、短语、从句，以避免重复；第二个空，用来指代前文中的内容，用it，选D。

哦，回答的不错