In 2009 many countries are going through financial crisis，________has a great effect on many walks of life.
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A
it
B
which
C
that
D
what
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I walked in our garden, ______ Tom and Jim were tying a big sign onto one of the trees.
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A
which
B
when
C
where
D
that
He constantly gets into awkward and absurd situations, ____ audience can be greatly amused.
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A
which
B
where
C
that
D
what
That passenger was very impolite to the conductor, ______, of course, made things even worse.
#77519
A
who
B
which
C
what
D
that