—What do you think of teacher，Bob?—I find it fun and challenging.It is a job ________ you are doing something serious but interesting.
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A
where
B
which
C
when
D
that
推荐题目
As a child, Jack studied in a village school，_______ is named after his grandfather．
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A
which
B
where
C
what
D
that
He is a man of great help, with ________ help you can solve the problem easily.
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A
his
B
which
C
whom
D
whose
Beijing was attacked by such a terrible sandstorm __________few citizens has ever experienced before.
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A
where
B
as
C
when
D
which
Mr. Duncan raised an unnecessary question __________ he then failed to find an answer.
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A
to which
B
for which
C
with which
D
by which