单项选择题

A．40 days a year.
B．4 days a year.
C．14 days a year.
D．15 days a year.
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单项选择题
A．Traveler and agent.B．Manager and worker.C．Shop assistant and customer.D．Classmates.
A．Traveler and agent.
B．Manager and worker.
C．Shop assistant and customer.
D．Classmates.
单项选择题
A．Friends.B．Mother and son.C．Husband and wife.D．Shopkeeper and customer.
A．Friends.
B．Mother and son.
C．Husband and wife.
D．Shopkeeper and customer.
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