Please call my secretary to arrange a meeting this afternoon, or ________ it is convenient to you.(2011·江西)
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A
whenever
B
however
C
whichever
D
wherever
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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
The boy was saved because the doctor arrived there _____ it was too late.
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A
before
B
since
C
or
D
while
. I have taught hundreds of students,___________ having been working in their fields for years.
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A
some of whom
B
some of them
C
most of whom
D
who
19.They talked about things and persons ___ they remembered in the school.
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A
who
B
which
C
that
D
what