is often the case with her my mother talked about my study for at least half an hour non

问题补充：

is often the case with her, my mother talked about my study for at least half an hour nonstop before she drove me to school yesterday．

A. As

B. Which

C. What

D. That

答案：

(答案→)A. As

B. Which

C. What

D. That

解析：考查定语从句。本题考查as引导的非限定性定语从句，which不可放在句首，故选A。