This outdoor training is an exercise , as we know, teenagers' confidence can be built.
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A
which
B
what
C
that
D
where
推荐题目
There is some doubt _________ Mr Zhang will sign the contract with us.
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when
B
whether
C
if
D
that
A newly designed skyscraper is being set up ______ the World Trade Center used to stood.
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where
B
at which
C
that
D
which
No matter ______ the CRH accident in Wenzhou, it had and will have much warning significance.
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A
how the investigators said caused
B
what the investigators said caused
C
why the investigators said caused
D
the investigators said how caused