单项选择题

This letter is written to ______.

A．a designer
B．a customer
C．a supplier
D．an office worker
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单项选择题
The office furniture seems to be used ______.
A．to occupy some space in the room
B．for office workers to work at
C．to keep something important
D．for people to sit on
单项选择题
Compared to the previous products, the newly designed ones ______.
A．costs a little more
B．takes much space
C．requires special skills
D．sells quite well
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