问题补充：
Is this school my father studied in when he was a child.
A. that
B. which
C. the one
D. /
答案：
A. that
B. which
(答案→)C. the one
D. /
解析：句意为：这所学校就是爸爸儿时读书的那所学校吗？
具体做法：将一般疑问句还原为陈述句，this school is my father studied in when he was a child.显然，空白处应为定语从句中的先行词，而先行词在在定语从句中做宾语，为了避免重复，通常可省略。The one ：特指句子中提到的事物（学校），为了避免重复
