---Three people got killed by two explosions.---When was __________?---________ was on April 15 __________ the 2013 Boston Marathon was being held．
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A
that; It; when
B
this; This; that
C
this; It; when
D
that; It; that
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- Was it because of his laziness_______ he didn't do the experiment successfully?- No, it was because of his carelessness.
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that
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while
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for
D
as
At the end of August, another serious quake in Sichuan , _______ has affected 500,000 people, happened about 30 km southeast of Panzhihua City, near the Sichuan-Yunnan border,
#77045
A
that
B
where
C
which
D
What
This is the small house less than 15 square meters, under _________ roof lives a large family of three generations.
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A
which
B
that
C
its
D
whose
Mr. Smith has been to many famous cities in China, _______ Chengdu has impressed him most.
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in which
B
on which
C
of which
D
with which