_____ in the library regulations that any book borrowed be returned by due time, or the borrower will be fined．
#78012
A
What is required
B
It is required
C
As is required
D
Which is required
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Helen was much kinder to her youngest son than to the others, ______, of course, made the others envy him.
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A
who
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which
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that
It was April 29, 2011 ______ Prince William and Kate Middleton walked into the palace hall of the wedding ceremony.
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that
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when
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since
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before
In the city, I saw so grand a National Day celebration _______ I never dreamed of．
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which
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as
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The English play ____ my students acted at the New Year’s party was a great success.
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A
for which
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at which
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in which
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In the flats Tom was the only man from _______ bedroom the thief had stolen much money.
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A
whose
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whom
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who
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where