—Did Jack come back early last night?—Yes. It was not yet eight o' clock          he arrived home
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A
before
B
that
C
when
D
until
推荐题目
I have a lot of books, half of ______ novels.
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A
which
B
that
C
whom
D
them
        that they may eventually reduce the amount of labor needed on construction sites by 90 percent.
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A
Such construction robots are clever
B
So clever the construction robots are
C
Such clever construction robots are
D
So clever are the construction robots