The river, ____ are covered with trees, is very long.
#73086
A
which banks
B
of which banks
C
whose the banks
D
the banks of which
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It was not yet dawn ______ the boy got to the school.
#67935
A
when
B
that
C
before
D
until
 Recently I bought an ancient Chinese vase, _______ was very reasonable.
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A
which price
B
the price of which
C
its price
D
the price of whose