The book was written in 1946, ____ the education system has witnessed great changes.
#70115
A
when
B
during which
C
since then
D
since when
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The journey around the world took the old sailor nine months, _____ the sailing time was 226 days.
#74257
A
of which
B
during which
C
from which
D
for which
It often happens that people with good eyesight fail to see is right in front of them.
#69404
A
which
B
that
C
what
D
as
. Some of the scientists held the point ______ the book said was right.
#70758
A
what what
B
that that
C
what that
D
that what
The engineers made two big plans for the dam, ____ was never put in force.
#73414
A
one of them
B
which
C
one of which
D
every one of which