问题
选择题
__________ 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
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。