I can think of many cases ______students obviously

题目

I can think of many cases ______students obviously
knew a lot of English words and expressions but couldn't write a good essay .
A.why.B.which.C.whose.D.where

答案

答案是WHERE
把你的句子分成两句就简单了：
1 I can think of many cases.
2 In those cases students knew a lot of English words and expressions but couldn't write a good essay .
再把 2 裏面的 In those cases 换成where或者in which.再合并起来就OK了.