问题补充:
--- I can’t find Xiao Ping. Where did you see him this morning?
--- In the reading room he often studies in.
A. that
B. where
C. in which
D. the one
答案:
(答案→)A. that
B. where
C. in which
D. the one
解析:考查定语从句,先行词是the reading room,定语从句中in缺少宾语用关系代词that,句意是:--我找不到小平,今天早上你在什么地方看见他的?--在他经常看书的图书馆。选A。