单项选择题

The young man assured the boss that he would ______all his energies to do the job well.

A．call on
B．call forth
C．call at
D．call off
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单项选择题
The prisoner stood there______.
A．with his hands cuffed
B．with his hands cuffing
C．with his cuffed hands
D．with his cuffing hands
单项选择题
The textile mill has over 8,000 workers, ______are women.
A．eighty percent of those
B．eighty percent of which
C．eighty percent of whom
D．eighty percent of that
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