单项选择题

______all the references to verify the information.

A． Look by
B． Look out
C． Look up
D． Look to
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单项选择题
The ______ was considered final.
A． decisive
B． decided
C． decision
D． deciding
单项选择题
The secretary had the messenger ______ the envelope as soon as possible.
A． delivering
B． to deliver
C． deliver
D． delivered
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