It’s helpful to put students in a situation they can learn how to cooperate with each other.
A. that
B. when
C. where
D. which
网友回答
A. that
B. when
(答案→)C. where
D. which
解析：考查定语从句。当定语从句的先行词是situation, case, condition等抽象名词，后面的定语从句句子很完整，要使用关系副词where。句意：把学生放在一个那个相互合作的情况里，对于学生是很有帮助的。故C正确。