问题
选择题
----- 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
答案
答案：A
that用于指代前面提到的事。When was that？那件事是什么时候发生的？回答When was that？时，要用it指代上文提到的事。It was in 1998 when he was in middle school. 那是在1998年他在中学时。