单项选择题
服务员给客房收客人要洗的衣服时,必须轻敲房门或按门铃,并说()
A.May I come in
B.Housekeeping
C.Laundry service
D.Is there anybody inside
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单项选择题
A.May I come in
B.Housekeeping
C.Laundry service
D.Is there anybody inside
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