_____ in the library regulations that any book borrowed be returned by due time, or the borrower will be fined．
#78012
A
What is required
B
It is required
C
As is required
D
Which is required
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The owner of the cinema needed to make a lot of improvements and employ more people to keep it running，________meant spending tens of thousands of pounds.
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who
B
that
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as
D
which
—What do you think of teaching, 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
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when
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that
The course about Chinese food attracts over 100 students per year, ________ up to half are from overseas.
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A
in which
B
for whom
C
with which
D
of whom