单项选择题

______ today, he could get there by Friday.

A．If he leaves
B．Was he leaving
C．Were he to leave
D．Would he have left
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He devoted most of his time ______ making scientific discoveries.
A．in
B．with
C．to
D．for
单项选择题
A few days later, the policeman found the old man ______ in bed, dead.
A．lying
B．to lie
C．laying
D．lied
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