单项选择题

A．To indicate how one can get better service.
B．To explain the derivation of the word "tip".
C．To illustrate why difficult customers give bad tips.
D．To put forward reasons for a salary increase.
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单项选择题
A．She should make a long run to relax.B．She should run a long way to listen to the music.C．She should run to the concert so as to spare some :time for relaxing.D．She should go to the concert for relaxing.
A．She should make a long run to relax.
B．She should run a long way to listen to the music.
C．She should run to the concert so as to spare some :time for relaxing.
D．She should go to the concert for relaxing.
单项选择题
A．Change the attitudes and behaviors of the smokers.B．Safeguard the forests from fire.C．Make some laws to prohibit smoking.D．Make more No Smoking warning signals.
A．Change the attitudes and behaviors of the smokers.
B．Safeguard the forests from fire.
C．Make some laws to prohibit smoking.
D．Make more "No Smoking" warning signals.
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