单项选择题

They failed to ______ the directors that their proposals would work, therefore all of their work is just a waste of time and effort.

A．convince
B．confirm
C．convert
D．control
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单项选择题
He wrote in his will, after his death, the business would be handed ______ to his son.
A．on
B．over
C．out
D．in
单项选择题
This lastest development has further ______ my determination to leave lest I'm arrested.
A．promoted
B．cultivated
C．pushed
D．strengthened
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