______ some problems have arisen in the process, we are confident that we can handle them.
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As
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If
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While
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Since
推荐题目
(2009江苏四市联考) By nine o'clock, all the Olympic torch bearers had reached the top of Mount Qomolangma, ___________ appeared a rare rainbow soon.
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of which
B
on which
C
from which
D
above which
It was the second time that the show__________in the good place.
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was
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has been
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Another drug that has helped improve people’s health is penicillin, _________ is _________ by many _________ one of the most important medicines.
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A
which, considered, being
B
that, considering, been
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that, to consider, being
D
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--- How was your trip to New York, Jennifer? --- Fantastic! That was the first time I _______ to such a big city. It’s so impressive.
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A
have taken
B
had taken
C
have been taken
D
had been taken