The reason__________ their failure you know is__________ they didn't get fully prepared for the experiment．
#79456
A
why, that
B
that, why
C
for, that
D
why, because
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I am afraid he's more of a talker than a doer, which is ________ he never finishes anything.(2011·山东)
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that
B
when
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where
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What is even more important is______ the earth cooled down, water began to appear on its surface.
#79436
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that
B
that as
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which
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which as
He is going to build a team that has a lot of potential and he thinks that is ____ excites him.
#79469
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that
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which
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Believe it or not，I'm sure that is ________ people call the six sense.
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when
B
what
C
which
D
why