The reason    he made such kind of mistakes is that he has had no _______ experience of this kind of job.
#69747
A
whether; previous
B
which; before
C
why; previous
D
that; before
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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.
#72563
A
which price
B
the price of which
C
its price
D
the price of whose