单项选择题

In the dark they could not see anything clear, but could ______.

A．hear somebody mourn
B．hear somebody mourning
C．hear somebody mourned
D．hear somebody had been mourning
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单项选择题
The index of industrial production ______ last year.
A．raised up by 4 per cent
B．rose up with 4 per cent
C．arose up with 4 per cent
D．went up by 4 per cent
单项选择题
His request for a day off ______ by the manager of the company.
A．was turned off
B．was turned down
C．was put down
D．was put away
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