Gun control is a subject ___ Americans have argued for a long time.
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A
of which
B
with which
C
about which
D
into which
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In Canada, cross country skiing is a popular sport among people ______ they can enjoy excitement and adventure.
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A
that
B
where
C
whom
D
which
—When did she get injured? —It was at midnight rain was pouring down.
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A
where
B
that
C
what
D
when
Mr. Obama paid a visit to China in November, 2009, _______, needless to say, must strengthen the Sino-US ties.
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A
what
B
that
C
which
D
it
________ is know to us all is that the old worker, for _______ life was hard in the past, still works hard in his seventies.
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A
As; whom
B
What; whose
C
It; whose
D
What; whom