It was April 29, 2001________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
D
before
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We haven’t settled the problem of_______it is necessary for him to study abroad.
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that
B
whether
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what
D
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Last term our maths teacher set so difficult an examination problem _____ none of us worked out.
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that
B
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D
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Sarah Brightman, ________ will fly to space in 2015, is the first woman to fly there in the field of music.
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A
who
B
that
C
which
D
whose