The black baby boy is at the stage he can only say a few simple words but not yet full sentences.
A. when
B. where
C. which
D. why
网友回答
A. when
(答案→)B. where
C. which
D. why
解析:句意:这个黑人小男孩现在处于只能说几个简单的单词但是还不能说整个句子的阶段。这里使用了定语从句,先行词是the stage,定语从句中不缺主宾表,缺少的是地点状语,用where引导定语从句,所以选B。