She wrote a month ago, ______ we’ve heard nothing. 
#73446
A
since when
B
before which
C
since that
D
after which
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We stayed in a quiet hotel,__    _.
#69263
A
next to it was a thick wood
B
next to which was a thick wood
C
next to it there was a thick wood
D
next to which a thick wood was
Unless __________, she won’t go to any party. 
#68021
A
inviting
B
having invited
C
invited
D
being invited