There are altogether eleven books on the shelf, ______five are mine.
#4901
A
on which
B
in which
C
of which
D
from which
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I haven’t seen______ this since I collected stamps.
#4923
A
as old a stamp as
B
so an old stamp as
C
stamp as old as
D
as an old stamp a
He regards that book _____ one of the worst that he’s _____ read. 
#4813
A
to be, ever
B
to be, never
C
as, ever
D
as, never