The World Expo 2010 is being held at a time the world is looking for a new kind of balance between nature and cities．
#69967
A
when
B
where
C
which
D
that
推荐题目
_____ this instrument should have put its work permit number on the box.
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A
Who checked
B
Whoever inspected
C
No matter who examined
D
Those who estimates
_______ in the regulations that you should not tell other people the password of your e-mail account.
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A
What is required
B
What requires
C
It is required
D
It requires
Can you make sure ______the gold ring?
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A
where Alice had put
B
where had Alice put
C
where Alice has put
D
where has Alice put
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