单项选择题


A．Supervisor and student.
B．Colleagues.
C．Editor and contributor.
D．Customer and typist.
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单项选择题
A．To save money.B．To avoid the new tax.C．To be more creative.D．To attract more audiences.
A．To save money.
B．To avoid the new tax.
C．To be more creative.
D．To attract more audiences.
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