He had collected plenty of historical evidence, proved that humans used to have different sleeping patterns.
#76733
A
that
B
which
C
it
D
what
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Windows 7 was created in 2009, many computer lovers were interested and excited.
#76186
A
when
B
where
C
why
D
which
livemocha. com is a free site _______ visitors can not just learn languages but also chat online.
#77331
A
that
B
where
C
which
D
what
Finally he reached a lonely island________was completely cut off from the outside world.
#75260
A
when
B
where
C
which
D
whom
The careless driver knocked down the old man _________ was crossing the road.
#77355
A
who
B
whom
C
whose
D
which