The room ______ door is painted green is our headmaster’s office. 
#68660
A
whose
B
its
C
which
D
of which
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There were 20 people sitting in the room, half ___ were women.
#71594
A
of whom
B
of which
C
about that
D
about whom
They have no idea at all ____________.
#74045
A
where he has gone
B
where did he go
C
which place he has gone
D
where he has gone