单项选择题

He's been working in the field ______ early this morning.

A．for
B．after
C．since
D．by
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单项选择题
Miranda lost weight ______ being on a diet.
A．by
B．with
C．to
D．from
单项选择题
I was against the idea but everybody else was in favor and I had to give ______.
A．in
B．against
C．over
D．with
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