单项选择题

The man was so absorbed ______ his job that he didn't notice what was happening.

A．on
B．in
C．of
D．at
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单项选择题
She wishes she ______ more beautiful.
A．is
B．was
C．be
D．were
单项选择题
You had better go there by train, ______
A．don't you
B．won't you
C．hadn't you
D．aren't you
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