It's helpful to put children in a situation they can see themselves differently.A. thatB.

问题补充：

Its helpful to put children in a situation they can see themselves differently.

A. that

B. when

C. which

D. where

答案：

A. that

B. when

C. which

(答案→)D. where

解析：考查定语从句，先行词是situation，定语从句中缺少地点状语，用where引导定语从句，句意：把孩子放在一个能从不同角度看见自己的环境中是很有帮助的。选D。