问题
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
答案：C
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。