单项选择题

A．Husband and wife.
B．Friends.
C．Boss and Clerk.
D．Colleagues.
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C
单项选择题
A．About one month.B．About two months.C．About two and a half months.D．About three months.
A．About one month.
B．About two months.
C．About two and a half months.
D．About three months.
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