----He was nearly drowned once ．
---- When was ?
----- was in 2000 he was in middle school ．
A. that; It ; when
B. this ;This; that
C. that; This; when
D. that; It ; that
网友回答
(答案→)A. that; It ; when
B. this ;This; that
C. that; This; when
D. that; It ; that
解析：考查情景交际和从句。“他曾经差点溺水。”“那是什么时候的事？”“在2000年，当他上中学的时候。”that指代上文提到的事，排除B、D；It特指提到的事情。故选A。