单项选择题

In our factory there are 2,000 workers, two thirds of （）are women.

A. them
B. which
C. whom
D. who

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They went on working （）it was late at night.

A. even if
B. as if
C. however
D. as though
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On the table （）two dictionaries, one open, the other closed.

A. lies
B. lays
C. laid
D. lie
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