单项选择题

At the international conference, the famous scientist gave an excellent report ______ on his recent experiment.

A．basing
B．based
C．to be based
D．to base
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单项选择题
Which of the following statements is NOT true
A．I live with very good people here.
B．1 live with very strange people here.
C．The family I live with like to drink tea.
D．The family I live with eat butter with salt in it.
填空题
( )推销信 ( )业绩工资
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