问题补充：
I saw a woman running toward me in the dark.Before I could recognize who she was, she had run back in the direction she had come.
A. of which
B. by which
C. in which
D. from which
答案：
A. of which
B. by which
C. in which
(答案→)D. from which
解析：本题考查介词加关系代词引导的定语从句。由于先行词是direction,所以很容易根据in the direction(of...)而错选C项。根据从句的需要come from..., 可知选D项，表示“她来自那个方向”。句意为:黑暗中我看到一个女人朝我跑来。我还没认清她是谁，她就沿着来的方向跑回去了。
