Theirchildisatthestage

来源：语文精选馆 3.1W

Their child is at the stage ________ she can say individual words but not full sentences.

A．why B．where

C．which D．what

考查定语从句。句意：他们的孩子正处于能说单个单词而不能说完整句子的阶段。句中she can say individual words but not full sentences是一个定语从句，先行词是the stage，关系词在定语从句中作地点状语，用关系副词where，故选B。