Water，which seems so simple and common，is________makes life possible.
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A
what
B
that
C
which
D
how
推荐题目
With time going by, we have come to realize that creativity is _______it takes to keep a nation highly competitive.
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A
what
B
how
C
why
D
that
----Many online games are full of violence, which do harm to the development of the children. ----And that’s _______ my concern lies.
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A
what
B
which
C
where
D
that
________ made the school proud was ________ more than 90% of the students had been admitted to key universities.
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A
What；because
B
What；that
C
That；what
D
That；because
The reason_________ he was late for work was_________ he didn’t get up early.
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A
for, because
B
which, because
C
why, that
D
for, that
Is this research center _________ you met some foreign guests last week?
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A
that
B
where
C
which
D
in which