单选题 Parents were surprised when the boy told them that he designed the toy house ______ from the inside out.
【正确答案】 B
【答案解析】[解析] 语法：反身代词
1．这是一道词汇选择题，选项均由代词构成。
2．that从句中主语、动词、宾语都具备，因此空格内应填入一个强调主语的反身代词，B．himself为正确选项。