—When did your brother begin to show his interest in medicine.—It was a Saturday _____ he noticed his classmate experimenting on a frog in the lab.
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A
that
B
what
C
when
D
which
推荐题目
You are saying that everyone is equal, _____ is _____ I disagree.
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that; what
B
which; what
C
which; where
D
that; where
The time is not far away ___ modern communication will become widespread in China’s vast countryside.
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when
B
as
C
that
D
which
He got himself into a difficult situation ________he must make a final decision all by himself.
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A
which
B
what
C
when
D
where
Many countries are now setting up national parks animals and plants can be protected.
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when
B
which
C
whose
D
where
Some people have concerns over the Disneyland in Shanghai will have a negative effect on the one in Hong Kong, has been criticized for being too small.
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A
that; that
B
which; which
C
whether; which
D
what; which