People who have studied ancient instruments are hoping to learn more about the culture that ______ this ancient flute.
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A
produce
B
produced
C
is producing
D
was produced
推荐题目
Mr Smith was so angry at all ________ Robert was doing _________ he walked out angrily.
#78315
A
that; what
B
that; that
C
which; which
D
what; that
In the cave they found the very book, the cover of _______was torn.
#76953
A
which
B
what
C
that
D
whose
________ is known to us all, our government has spared no efforts to control food prices.
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A
What
B
Which
C
As
D
It
Gun control is a subject ________ Americans have argued for a long time.
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A
of which
B
with which
C
about which
D
into which