Was it in that school _______ he

Was it in that school _______ he developed his interest in Physics?
A、which
B、from which
C、where
D、that
【正确答案】：D
【题目解析】：本题考查强调句型。译文：他是在那所学校才逐渐对物理感兴趣吗?此题考查强调句型的疑问句形式。It is／was…that…是强调句型，变成疑问句时要把is或was提前。