The book was written in 1946, _______ the education system has witnessed great changes.
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A
since then
B
when
C
since when
D
during which
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– How did you make contact with the travel agent, Tom？– Oh, that’s easy. I surfed the Internet and then called one _____ the telephone number is provided.
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A
that
B
in which
C
of which
D
whose
Recent accidents, _________ forty-five people lost their lives, have renewed concerns over the safety of overnight buses.
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A
that
B
where
C
which
D
when
Last Sunday I went to visit the History Museum where I saw a pot _________ about 1,000 years before.
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A
so it had been
B
so had it been
C
what it had been
D
as it had been
We should consider the students’ request_____ the school library provide more books on popular science.
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A
when
B
which
C
that
D
where