He got his first book published.It turned out to be a bestseller.--- He got his first book published.It turnedout 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选哪个,请详解原因,
问题描述：
He got his first book published.It turned out to be a bestseller.
--- He got his first book published.It turnedout 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
选哪个,请详解原因,
答
选D。that是指代前面的情况。it是形式主语。用法跟it is a snake，的it一样。
答
选D
When was _____?中,用that指代那件事,疑问句中不用this
_____ was in 2000 when he was still in college 中it指代那件事,when后面是时间状语从句