With the development of science and technology, the prices of TV sets have ________.
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A
gone down
B
went down
C
brought down
D
been gone down
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I prefer studying English at home ______the match
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A
to watching
B
to watch
C
rather than watch
D
rather than to watch
They didn’t know how the change had        .
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A
been taken place
B
happen
C
come about
D
broke out