问题
选择题
20. "What can I do for you?" or "May I help you?" is a pet phrase used by _____ .
A．an assistant engineer
B．an assistant manager
C．a helper
D．a shop assistant
答案
D
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20. "What can I do for you?" or "May I help you?" is a pet phrase used by _____ .
A．an assistant engineer
B．an assistant manager
C．a helper
D．a shop assistant
D