问题
单项选择题
The president stood by a window inside the room,（）, looking over the square.
A. where I entered
B. into which I entered
C. which I entered
D. that I entered
答案
参考答案：C
解析：
考查定语从句。enter为及物动词，先行词the room为其宾语，不需使用介词，也不能用where。非限制性定语从句只能使用which引导。故选C。
