The young couple was worried,because neither of them was aware ______ they had lost the necklace.
#74284
A
of the place
B
of which
C
where
D
of where
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She wrote a month ago, ______ we’ve heard nothing. 
#73446
A
since when
B
before which
C
since that
D
after which
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