单项选择题

The proposal was submitted ______April 28.

A． at
B． the
C． on
D． from
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单项选择题
Mr. Daley is our most skilled speaker; ______, he is unavailable to give the presentation.
A． besides
B． nevertheless
C． for example
D． while
单项选择题
People either don't have the money ______they aren't willing to spend it.
A． and
B． neither
C． or
D． although
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