Everyone has a stage in their life they seem to have trouble in everything.A. whereB. whe

问题补充：

Everyone has a stage in their life they seem to have trouble in everything.

A. where

B. when

C. that

D. why

答案：

A. where

(答案→)B. when

C. that

D. why

解析：考查定语从句：先行词是a stage，一个时期，定语从句中缺少时间状语，用when引导定语从句，句意：每个人的人生都有个时期，好像一切都有困难。选B。