The Olympics are like a huge stage everyone makes every effort to achieve their dreams.A.

问题补充：

The Olympics are like a huge stage everyone makes every effort to achieve their dreams.

A. that

B. when

C. which

D. where

答案：

A. that

B. when

C. which

(答案→)D. where

解析：选D考查定语从句。句意：奥运会就像是一个大舞台，每个人都在这个舞台上为实现梦想而竭尽全力。句中的先行词stage后接where引导的定语从句。注意：一些表示抽象地点的名词(如situation, case, scene等)后接定语从句时，常用where引导。