单项选择题


A. tell the manager in advance.
B. sign the manager's noticeboard.
C. say what kind of event they are plannin
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单项选择题
A．atB．withinC．during
A．at
B．within
C．during
单项选择题
The UK oil group changed certain policies in order to recover its market share.
A．Right
B．Wrong
C．Doesn’t say
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