单选题 —He was nearly drowned once.
—When was ______?
—______ was in 1998 when he was in middle school.
A) that; It B) this; This C) this; It D) that; This

【正确答案】 A

【答案解析】第一空用that指代He was nearly drowned once. 这一过去发生的事情；第二空的it指代第一空的that。