In the study of modern science, there are many cases soldiers can teach officersA. whenB

发布时间：2020-08-16 19:29:57

In the study of modern science, there are many cases      soldiers can teach officers．
A. when
B. who
C. which
D. where

网友回答

A. when
B. who
C. which
(答案→)D. where
解析：考查定语从句。先行词为抽象的地点名词cases，且从句中不缺主语或宾语，缺少的是地点状语，所以用关系副词where,选D。
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