He has made another wonderful discovery, _____ I think is of great importance to science.
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A
which
B
what
C
when
D
that
推荐题目
Can you think of a situation ______people communicate only by meansof bodylanguage?
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A
that
B
which
C
where
D
when
John invited about 40 people to his wedding, most of ______ are family members.
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A
them
B
that
C
which
D
whom
In the police station I saw the man from __________ room the thief had stolen the TV set.
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A
whom
B
which
C
that
D
whose
In the study of modern science, there are many cases _____ soldiers can teach officers．
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A
when
B
who
C
which
D
where
There was a time __________ the people in my village lived a peaceful life, enjoying the beauty of nature.
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A
which
B
when
C
that
D
where