【题目】_______ which university to attend, the girl asked her teacher for advice.
A.Not knowing
B.Knowing not
C.Not known
D.Known not

【答案】A
【解析】句意：不知道该读哪所大学，这个女孩向她的老师寻求建议。Not knowing所在部分作原因状语，know 与其逻辑主语（the girl）为主宾关系，故用-ing形式表主动。另外，非谓语的否定形式，not应位于非谓语动词之前，故用not knowing，选A。