Catherine Ⅱ had the Amber Room moved to a palace outside St. Petersburg __________ she spent her summers.
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A
where
B
which
C
that
D
at which
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The old professor has three sons,________are doctors.
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A
all of them
B
all of whom
C
all of that
D
all of which
University graduates should develop such skills as critical thinking, and inter-personal communication, ________ are important in personal development.
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A
which are believed by the manager that
B
which are believed by the manager
C
which the manager believes that
D
which the manager believes