The pen ______he is writing is mine. 
#73790
A
with which
B
in which
C
on which
D
by which
推荐题目
The president stood by a window inside the room, ____, looking over the square. 
#73411
A
where I entered
B
into which I entered
C
which I entered
D
that I entered
Is this factory ___________?
#70725
A
the one your father works in
B
where your father works
C
which your father works
D
your father works in