Microblog is a platform ________ people can express their thoughts and communicate with each other by sending posts.
#76890
A
which
B
where
C
what
D
when
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is known to everybody, the moon travels round the earth once every month.
#77425
A
It
B
As
C
That
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Which
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#77553
A
about which
B
of which
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in which
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#75619
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which
B
when
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whose
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where
In the dark street there wasn’t a single person _____ Mary could turn for help.
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A
to whom
B
to which
C
on whom
D
on which