单项选择题

While we appoint an agent, it is usual to make the appointment ( ).

A．in writing
B．on paper
C．with writing
D．write down
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单项选择题
They ( ) a Warm welcome to our visit.
A．provide
B．offer
C．extend
D．show
单项选择题
The quality of the above mentioned goods were in conformity ( ) the requirement of the contract No.JBD-089.
A．at
B．that
C．with
D．on
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