She has a gift for creating an atmosphere for her students _______allows them to communicate freely with each other.
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A
which
B
where
C
what
D
who
推荐题目
It was March 11, 2011 _______ magnitude-9.0 earthquake struck Japan and subsequent tsunami triggered the large-scale crisis.
#78442
A
that
B
when
C
on which
D
which
We still remember the day ______ we spend repairing the old house.
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A
what
B
on which
C
when
D
which
There are many kinds of birds in Australia, and over 140 species of snakes, ______are extremely dangerous.
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A
many of those
B
many of that
C
many of which
D
many of what
Nowadays，it is common to see people staring at their mobile phones instead of reading a real book，＿＿＿＿＿＿many experts are worried．
#75642
A
when
B
for which
C
where
D
about which