单项选择题

He asked his sister to look after his children ________ his death.

A．in the event of
B．in view of
C． on account of
D．on the edge of
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单项选择题
________ does he know that the police are about to arrest him.
A．Few
B． Only
C．Seldom
D． Little
单项选择题
In the meantime, the question facing business is whether such research is ________ the costs.
A．worth
B．worth of
C．worthy
D．worthwhile
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