––Do you think it wise for parents to do everything for their children? ––No. That’s they

问题补充：

––Do you think it wise for parents to do everything for their children?

––No. That’s they’re mistaken.

A. whether

B. when

C. what

D. where

答案：

A. whether

B. when

C. what

(答案→)D. where

解析：考察表语从句。系动词is后面接表语从句，根据句意由where引导，结合句意可知D正确。句意：那就是他们错误的地方。