单项选择题

He devoted most of his time ______ making scientific discoveries.

A. in
B. with
C. to
D. for
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单项选择题
______ for several times, Bill made up his mind not to watch late night movies any more.
A. To be scolded
B. To have been scolded
C. Being scolded
D. Having been scolded
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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