Question

【题目】Their youngest girl is at the stage ______ she can say a single word but not a full sentence

A. when B. which C. that D. where

Answer 1

【答案】D

【解析】考查定语从句。句意：小女孩现在处于说单个字而不能说完整句子的阶段。the stage是先行词，定语从句_____ she can say a single word but not a full sentence缺少状语，故选D项。