单项选择题

It is not considered ______ to pick one's teeth in public.

A．respectful
B．respected
C．respectable
D．respective
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单项选择题
During a business lunch it's important to ______.
A．make a deal with the client
B．order nice, expensive food
C．be a good listener
D．inquire after the client's health
单项选择题
Juliet is not at work. She is taking a ______ until the end of this week.
A．vocation
B．vacation
C．vacancy
D．volume
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