20. What can I do for you? or May I help you? is a pet phrase used by .A. an assistant en

发布时间：2020-08-16 07:06:54


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

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A. an assistant engineer
B. an assistant manager
C. a helper
D. a shop assistant
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